I do not keep horses. I am saying that in the first line, because a horse fly mask is one of the few pieces of gear I review that has never hung on a hook in my own barn.

What I do have is Henderson, Nevada, years as a mechanic in a custom off-road shop, and a house that filled with strays. An English Mastiff, barn cats, rescue rabbits and a desert tortoise, most of them sleeping on beds I built from shop metal and canvas, because the store bought stuff kept failing.

So I did this page the way I do the ones for my own animals. A full research day, every listing read line by line, the reviews read at both ends, and a mechanic’s eye on the four things that kill one of these: the mesh gauge, the stitching, the hook and loop that dies once dust gets into it, and the seams a horse rubs open on a fence post. What owners report is the evidence here. What the maker prints is the spec.

Short version. A fly mask is a consumable. Your horse will destroy it, lose it in tall grass, or rub it apart on a gate. So the question is not which one lasts forever, it is which one holds its shape off the eye, stays on a head that wants it gone, and costs little enough to replace in July without flinching.

Brown horse turned out in a green summer field, where a horse fly mask earns its keep
Turnout in July is the whole job. Photo: Francesco Altamura, Pexels.

Part of our horse gear guide.

Quick picks: the best horse fly mask for each job

In a hurry? The best horse fly mask for most horses is the Harrison Howard CareMaster Pro, the only mask here with fleece padded into every seam that touches skin and a mesh stiff enough to stand off the face. The deepest track record by a distance belongs to the Cashel Crusader with ears, the mask people ask for by name. The best value that is not a gamble is the Harrison Howard All Round Mesh.

You need My pick Why
The best all-round mask Harrison Howard CareMaster Pro Fleece on the forehead and nose seams, stiff mesh, eared
The name everyone asks for Cashel Crusader with Ears The most proven mask here, and it prints a UV figure
Best value Harrison Howard All Round Mesh Fleece edging and a real forelock opening, thousands of owners
A horse who hates ear pressure Cashel Crusader Standard Same mask, no ears and no nose, holds its shape
A mini, a foal or a pony Farnam SuperMask II The only mask here that prints five named sizes
A draft or a warmblood head Cashel Crusader or the standard cut Owners of Percherons and Irish Drafts keep coming back
The cheapest thing worth buying Pro-Force with UV Protection Fleece lined trim, double locking fastener, a reflector strip
A mask that pulls on with no hook and loop Harrison Howard Super Comfort One piece, nothing for a horse to pick open

How I ranked these horse fly masks

Years of truck parts taught me one question: what breaks first, and does the maker admit it exists? A fly mask is a simple assembly. Mesh, binding, padding, a closure, some stitching. Every one has a failure mode, and the listings are loud about the good parts and silent about the rest.

  • Does the mesh stand off the eye. The whole game. A mask that collapses onto the lashes rubs. Stiff mesh, or darts sewn in to hold it out.
  • The closure. Hook and loop under the jaw is what fails in a dusty pasture. Double locking or dual fasteners buy you a season. A pull-on cannot clog, but it also cannot be adjusted.
  • What touches skin. Fleece on the binding, the forehead and the nose. Without it you get brow rubs, which owners report more than anything else.
  • What the maker actually prints. A UV number, named sizes, a stated mesh. “UV protection” with no figure goes down as not stated in my table.
  • Whether owners buy it again. A second and third season is the only durability test worth anything on a product a horse is trying to destroy.

Straight talk: I earn a commission if you buy through my links. It costs you nothing, and it is what pays for a day spent reading fly mask reviews. Prices move constantly, so I do not print them. Click through and check.

Best horse fly masks with ears

Ears are not decoration. Gnats work the inside of the ear harder than the eye, and a horse head shaking in July is usually telling you about his ears. The cost is fit: an eared mask has to match the shape of the head, and one that is right everywhere else can still let the ears pop out on the first shake.

Cashel Crusader horse fly mask with ears in grey
Premium pickCrowd favorite

1. Cashel Crusader Fly Mask with Ears

  • Soft coated nylon micromesh
  • Patented three hole cap for an unobstructed view
  • Maker states it blocks up to 70% of UV rays
  • Offered in a no ear, eared and long nose cut

The most proven mask on this page and the one people name out loud. If you want the safe answer, this is it.

Check the price on Amazon

The reviews that sold me are about shape, not softness. An owner of an Irish Draft with a wide forehead had watched other masks lay down on his eyes, and says this one is wider and stiffer so the material sits well clear of the face, with generous ears and airflow through them. An owner of three draft horses says the warmblood size fits all three and the mesh does not rub the eyelashes the way other brands did.

Then there is the one that made me laugh. A horse got this mask off and it lay in a field of tall grass for an entire summer, stomped into the ground, and turned up the following week completely intact. No rips, no tears, wash it and carry on. The honest gripe is sizing: plenty of owners say it runs big, so measure rather than ordering by breed.

What bugs me

  • Runs big, so sizing complaints are common
  • Names no fleece and no size list on the listing
Harrison Howard CareMaster Pro Luminous horse fly mask with ears
Best all-round

2. Harrison Howard CareMaster Pro Luminous

  • Thick fleece padding on the inner forehead and nose seams
  • Ultra fine ventilating mesh, large eye space
  • Maker states tested UV protection, no figure printed
  • Adjustable touch and go straps

My pick for most horses. It is the only mask here with fleece worked into every seam that lands on skin, and the mesh is stiff enough to stay off the face.

Check the price on Amazon

An owner with a big headed Thoroughbred in the extra large size gives the clearest description of why the build matters: the fine mesh keeps insects off, and the stiffness holds the fabric away from his face, while the fleece around the nose stops the rubbing. Another owner in Michigan ran hers all summer, says the straps held tight, and expects to use them again next year.

One owner makes a point I had not thought of. You can see the horse’s eyes through the large eye area, which matters when you are checking a horse in a field rather than standing next to him. The gripe is honest and repeated: some report tearing after about a month, and some report the closure letting go. Fit it snug, because owners say gnats find their way in through a loose one.

What bugs me

  • Tearing reported after about a month
  • Says tested UV protection but prints no figure
Chestnut horse wearing a horse fly mask in a sunny pasture
This is what a fly mask that fits looks like at fifty feet. Photo: Markus Winkler, Pexels.
Grey horse fly mask with ears and fine mesh UV protection
Biggest mover

3. Fine Mesh Fly Mask with Ears

  • Breathable fine mesh, adjustable fit
  • Sold for miniature, foal, cob, draft and full
  • Maker states UV protection, no figure printed
  • Easy to rinse and dry

The mask flying off the shelves this month. It is the cheap one you buy three of, and owners treat it exactly that way.

Check the price on Amazon

The reviews are a straight trade and the owners know it. One says her horses wreck far pricier masks without remorse, and these have been on all summer and still look like they did three months ago, which is enough for her. An owner with a small Arabian rates the stretch in the closure for getting a good fit on a short head, and says it came through a whole summer usable for next year.

The other half is just as consistent. An off the track mare ripped an ear piece. Others report it falling apart inside a week, and a large fitted a fifteen two hand gelding everywhere except the ears. Buy it as a spare, not as your only mask.

What bugs me

  • Falling apart inside a week is a real report
  • The ears run snug on a big eared horse
Harrison Howard Super Comfort stretchy horse fly mask with large eye space
Pull-on pick

4. Harrison Howard Super Comfort Stretchy

  • One piece design with no hook and loop fasteners
  • Stretchy ear mesh covers
  • Large eye openings set at a safe distance
  • Maker states UV protection, no figure printed

The pull-on. Nothing to clog with dust, nothing for a bored horse to pick open, and it goes on under a halter.

Check the price on Amazon

The best argument for it comes from an owner whose horses have around the clock access to open pasture and wear these full time through the season. Because the mask is stretchy it sits close, so nothing gets in underneath, and there is nothing sticking out to catch when they rub their faces and ears on bushes. Another owner who has been through several stretchy brands says the common failure is mesh sitting too near the eye, and rates this one for not doing that.

The catch is the same catch every stretchy mask has. Durability splits hard, with some owners getting a full season and others reporting a tear inside two days. There is also no opening for the forelock, which annoys people with a thick one. A pull-on cannot be adjusted, so if it is not your horse’s shape, it is not fixable.

What bugs me

  • Tearing within days is a repeated report
  • No forelock opening, and no way to adjust it

Masks with ears and a nose, the long nose cut

People search for this one once a horse has a pink or bald muzzle. It is the same mask with the mesh carried further down the face, a cut of an existing model rather than a separate product. Both the Cashel Crusader and the Harrison Howard CareMaster Pro offer a long nose with ears version.

It gets no card of its own, because I only card a product when I have read that exact listing’s own owners, and the long nose versions share reviews with the standard cut. Owners repeat two things: it runs long, so on a short faced horse such as an Arabian it hangs past the muzzle, and a nose cover is one more surface to rub, so it wants fleece binding more than any other cut.

Best horse fly masks without ears

Plenty of horses will not tolerate anything on their ears, and plenty of owners have watched an eared mask come off within the hour. The no ear cut runs cooler and gives you one less thing to fit. You give up ear protection, which is a real loss in gnat country, so this is a horse by horse call.

Cashel Crusader standard horse fly mask with no ears in grey
Premium pickNo ears

5. Cashel Crusader Standard, No Ears

  • Soft coated nylon micromesh
  • Patented three hole cap holds the shape
  • Maker states it blocks up to 70% of UV rays
  • No ears and no nose cover

The same mask as my premium pick with the ears left off. If your horse will not wear ears, buy this rather than dropping to a cheaper brand.

Check the price on Amazon

The evidence here is about holding shape and staying on. An owner of a seventeen two hand warmblood says it does not collapse onto his eyes and keeps its shape, hand washes well, and that the closure and the stitching are both good quality. Her horse is, in her words, an expert at getting fly masks off, and this is the one he has not ditched.

Big heads are covered too. An owner of a seventeen three hand Percheron says draft sizing usually still comes up short and this fit perfectly, after a previous mask was shredded in a week. Another owner likes that it keeps the forelock off her mare’s face. The recurring complaint is the same as the eared version: sizing runs generous, so measure first.

What bugs me

  • Sizing runs large and owners say so often
  • No fleece named anywhere on the listing
Farnam SuperMask II horse fly mask without ears with fleece trim
Best sizing

6. Farnam SuperMask II Without Ears

  • Plush fleece trim and clear see through mesh
  • Five named sizes: foal, yearling, small, average horse and XL
  • Adjustable throat latch with a double latch closure
  • Maker states protection from flies, debris and UV

The one to buy when you are fitting something other than an average horse. It is the only mask here that names every size it makes.

Check the price on Amazon

The sizing pays off immediately. An owner needing something for a forty inch mini took a chance on the foal size and it fit perfectly on a horse who had never worn a mask before. At the other end, owners with bigger heads and with mules report it fitting where other masks do not. One long time buyer notes this style sits further down the nose than the original version did.

My favourite test on this page is also here. An owner sprays every new mask with water to see how it will behave in the rain, and says this one drains well rather than holding water against the face. The gripe is at the top of the range: an extra large on a Quarter Horse covered the nose well but collapsed at the eye, which is the failure mode to watch when a mask is too big.

What bugs me

  • Oversize collapses at the eye, so do not size up
  • Says UV but prints no figure
Harrison Howard All Round Mesh horse fly mask with fleece padded edging
Best value

7. Harrison Howard All Round Mesh

  • Soft fleece trim on padded edges to reduce pressure marks
  • Generous forelock opening between the ears
  • Dense breathable non heat transferring fine mesh
  • One adjustable chin strap under the jaw

My value pick, and the only mask here that solves the forelock properly. Fleece edging at a price where nobody else bothers.

Check the price on Amazon

Owners keep comparing it upward. One says it is as good as options costing considerably more, and another who bought this brand years ago says that mask lasted for years, so she ordered this one for her donkey, where it fits, leaves room for his ears and does not run too long on his face. An owner with a registered paint at fifteen hands reports padding around the nose and ears with ample room and a closure that holds.

Two useful details from owners. A bright colour is easy to spot when the mask ends up in the grass. And one owner points out that a black mesh is far easier to see through than a grey one, worth knowing if you want to check an eye without taking the mask off. The complaint is sizing again: some find it large on Quarter Horses, some say it suits a narrow head.

What bugs me

  • Sizing reports pull in both directions
  • One chin strap rather than a double closure
Close up of a brown horse face showing the eyes and lashes a horse fly mask protects
Everything on this page is about keeping mesh off this. Photo: Daijon J, Pexels.
Pro-Force horse fly mask with UV protection and fleece lined trim, no ears
Best cheap buy

8. Pro-Force Fly Mask with UV Protection

  • Fleece lined trim to prevent rubbing
  • Adjustable double locking fastener
  • Reflector strip for finding a horse in the dark
  • Maker states it fits horses from 900 to 1200 pounds

The cheapest mask here I would actually put on a horse. Fleece trim and a double locking closure at a price where you normally get neither.

Check the price on Amazon

The most useful review on this page belongs to it. A woman who has worked for a large horse rescue for twenty eight years, after a decade of professional training before that, lists exactly what goes wrong with fly masks: they do not fit right, they are too shallow at the eye, they rub the forelock away, or they have no UV protection. She rates this one anyway. Another owner singles out the space between the ears, which lets the skin there breathe instead of sweating under fabric.

The problem is size, and it is not subtle. Owners say it runs very small and realistically fits an Arabian or a lighter horse, with one Quarter Horse gelding too big for it while the Appaloosa mare in the same barn fit fine. It also does not run the full length of the nose. One owner reports a small rub on her mare’s brow, so watch the first few days.

What bugs me

  • Runs small, realistically an Arabian or lighter horse
  • Brow rubs reported, so check it early
TSZ horse fly mask standard no ears with fleece padding and UV block mesh
Sun pick

9. TSZ Standard Fly Mask, No Ears

  • Maker states it blocks 70% of UV rays
  • Fleece padding along the edges
  • Tear resistant mesh
  • Sized between the ears and down the centre of the face

One of only two masks here that prints a UV figure, and the only one of the two that also names fleece padding.

Check the price on Amazon

Owners come back to it. One is on a third fly season with these, says they hold up and stay on, and one owner with a horse who has a white nose says it keeps the sun off it. Another fitted the standard horse size to a very large Quarter Horse without trouble and rates the room in the eye area, which is the detail that separates a mask that works from one that rubs.

The service story is worth noting because it is rare. An owner had one rip to the point of being unusable and it was replaced without argument under a full warranty. The gripe is a real split on durability, and no Arabian size, which leaves short faced horses with a nose cover that hangs past the muzzle.

What bugs me

  • Durability reports split down the middle
  • No Arabian size, so short faces are stuck
Raelitego horse fly mask without ears with fine nylon micromesh
Spare mask pick

10. Raelitego Fly Mask Without Ears

  • Fine nylon micromesh, no ear covers
  • Reinforced stitching and abrasion resistant mesh
  • Five sizes from foal to draft
  • Dual fasteners under the jaw

The newcomer, and the one owners keep comparing to the premium brand. Read the short record before you commit a whole barn to it.

Check the price on Amazon

The weak part first: this mask has the shortest owner record on the page by a distance, a fraction of what the Cashel and Harrison Howard masks carry. That is why it is a spare mask pick and never a top three pick, however good the early reports read.

And they do read well. Two separate owners say it is very similar to the premium brand at a friendlier price, one adding that the eye darts are well positioned and do not fold in on the eyelashes. Another rates the covered double closure for staying clean and secure, and says it even fits minis. An owner whose mini was healing from an injury says the darts held the mask clear of the eye. The consistent note is that it runs a little large.

What bugs me

  • The thinnest owner record on this page
  • Runs large, so size down rather than up

One more, here as a warning rather than a pick. This is the price point people drop to after losing three masks in a season, and it is the lowest rated product on this page by a wide margin.

SAGUD stretchy horse fly mask with ears in soft mesh
Special case

11. SAGUD Stretchy Fly Mask with Ears

  • Breathable mesh with comfortable elastic
  • One piece with no hook and loop fasteners
  • Maker states space between the mesh and the eyes
  • The cheapest mask on this page

The only product here I list without recommending. The idea is fine and the execution is the problem, so read the gripes before the price tempts you.

Check the price on Amazon

The complaint that decided it for me is about pattern, not materials. An owner says her horses shook their heads once and the ears slipped straight out, that the size was right for the head, and that the mask simply is not cut to the anatomy of a horse’s head. Another describes the darts sitting over the forehead and pulling the mesh onto the eyes, which is the exact failure every other mask here is engineered to avoid.

It is not universal. One owner re-orders these for an old stallion who cannot tolerate insects near his eyes, and says it lasts a couple of years. But the record overall says not worth the money, and several owners report no size choice when ordering. If your budget is this tight, buy the Pro-Force instead and get fleece trim and a real closure with it.

What bugs me

  • Owners report ears slipping out on the first head shake
  • Darts pulling mesh onto the eye, the one thing that must not happen

UV protection, in the makers’ own words

I am not a vet, I am a guy who reads listings for a living, so here is exactly what the makers state and nothing beyond it.

Two masks print a number. Cashel states the Crusader blocks up to 70% of the sun’s ultraviolet rays, on both the eared and the standard cut. TSZ states its mask blocks 70% of UV rays. Those are the only figures printed in this group.

Everything else says UV without a figure. Harrison Howard states tested UV protection, Farnam states protection from flies, debris and UV, and Pro-Force states protection from harmful UV rays. None prints a percentage, so none gets a check in the UV column. That is a gap in what they publish, not an accusation.

Buy the mask for the insects and the fit, and treat a UV figure as a bonus the maker has chosen to print. If sun on a pink muzzle or a light coloured face is your actual worry, that is a question for your vet, not for a product page.

How to size a horse fly mask by breed

Sizing generates more complaints here than anything else, and nearly all of it is avoidable. Work through it in this order, using the sizes each maker actually prints.

  1. Measure, do not guess by breed. Run a tape from the poll behind the ears to just below the cheekbone, and around the jaw where a closure sits. Breed names on a listing are a rough guide and every maker draws them differently.
  2. Read the size list the maker prints. Farnam names foal, yearling, small, average horse and extra large. Raelitego names five sizes from foal to draft. TSZ prints one standard horse size, measured between the ears and down the centre of the face. Pro-Force states a weight range instead, nine hundred to twelve hundred pounds. Cashel says a full range of sizes and names none of them.
  3. Size down when you are between. Every oversize report here ends the same way: the mask collapses at the eye. Too big is worse than slightly snug, because a loose mask stops holding the mesh off the face.
  4. Short faces and draft heads are the two hard cases. Arabians are where a long nose cut hangs past the muzzle, and their owners say they cannot use one. At the other end, owners of Percherons and Irish Drafts say draft sizing from most brands still comes up short, and Cashel is the brand they name when it fits.
  5. Check the ears separately. A mask can fit the head and still pinch the ears, which is what owners of big eared horses report on the cheaper eared masks.
  6. Watch the first three days. Look for rub marks on the brow and jaw, and check the mesh is not resting on the lashes when he lowers his head to graze. That is when a size problem shows itself.

Durability and the mesh: what dies first

I looked at these the way I looked at truck parts, and the failure order is consistent. It is almost never the mesh panel that goes first.

The closure goes first. Hook and loop under the jaw fills with dust, hair and grass seed, and once loaded it stops gripping. That is why double locking and dual fastener designs matter more than they look like they should, and why the pull-on masks dodge the problem by having no fastener at all.

The seams go second. A horse rubs his face on a fence post, a gate or another horse, and the stitching at the binding takes the load. Owners reporting a tear after a month are usually describing a seam, not a hole in a panel. Fleece padded binding pays twice here, once for the skin and once for the stitch line. The ears go third on any eared mask, and first on a cheap one, because they are small pieces of fabric on a part of the horse that never stops moving.

The mesh itself mostly survives, which is why that mask lost in a field for a whole summer came back intact. Two things help it: a stiff mesh that holds its own shape, and darts sewn in to keep it off the eye. Anything that lets the mesh lie on the lashes will rub, and a rubbing mask comes off, gets lost, and protects nothing.

Horse fly mask feature check table

Every mask against what its maker actually prints. Scroll sideways on a phone.

Fly mask Ears covered Long nose cut offered UV figure printed Fleece or padded trim Eye space or darts named Forelock opening Double or dual closure Named size list Pull-on, no fasteners
1. Cashel Crusader with Ears n/s n/s n/s n/s n/s
2. Harrison Howard CareMaster Pro n/s n/s n/s n/s
3. Fine Mesh Mask with Ears n/s n/s n/s n/s n/s n/s
4. Harrison Howard Super Comfort n/s n/s n/s n/s
5. Cashel Crusader Standard n/s n/s n/s n/s n/s
6. Farnam SuperMask II n/s n/s n/s n/s
7. Harrison Howard All Round Mesh n/s n/s n/s n/s
8. Pro-Force with UV Protection n/s n/s n/s n/s
9. TSZ Standard n/s n/s n/s n/s
10. Raelitego Without Ears n/s n/s n/s n/s
11. SAGUD Stretchy n/s n/s n/s n/s

n/s = the maker does not say. “Ears covered” is a check only when the listing sells an eared cut, “Long nose cut offered” only when that cut is on the same listing. “UV figure printed” only when a percentage is published, so UV protection with no number is n/s. “Fleece or padded trim” only when fleece or padding is named, “Eye space or darts named” only when the listing states the mesh is held clear of the eye. “Forelock opening” and “Double or dual closure” only when named. “Named size list” only when sizes are printed by name or as a weight range. “Pull-on” only when the listing states there are no hook and loop fasteners.

Horses at a wooden pasture fence in summer, the turnout hours a horse fly mask covers
The fence is also what a mask gets rubbed off on. Photo: Jean Alves, Pexels.

My top 3 horse fly masks

Eleven masks is a lot, so here is where I would put money, one at each price. Timing note: this is a seasonal buy that sells hard from spring into midsummer and gets marked down after it, so if your current mask will limp to autumn, wait for the clearance and buy two.

Premium pick
Cashel Crusader horse fly mask with ears

Cashel Crusader with Ears

The most proven mask here, stiff enough to hold the mesh clear of the eye, and one of only two that prints a UV figure. Measure first, it runs big.

Check the price on Amazon

Best all-round
Harrison Howard CareMaster Pro Luminous horse fly mask

Harrison Howard CareMaster Pro

Fleece padded into the forehead and nose seams, mesh stiff enough to stay off the face, and an eye space wide enough to check an eye through. The mask I would put on a horse first.

Check the price on Amazon

Best value
Harrison Howard All Round Mesh horse fly mask

Harrison Howard All Round Mesh

Fleece padded edging and a proper forelock opening at a price where neither is normal. Owners say it holds up as well as masks costing a good deal more.

Check the price on Amazon

Notice what is not here: the cheapest mask on the page. The SAGUD at number eleven is the lowest rated product in this group, with owners reporting the ears slipping out on the first head shake. The Raelitego is a promising budget mask and it still misses my top three, because its owner record is a fraction of the size of the three above and I will not put a thin record in a top slot. Every mask in that list has thousands of owners behind it.

A mask is one part of getting a horse through fly season. Our horse gear guide covers the rest of the category, the service dog vest guide applies the same lessons about mesh, hook and loop and sizing to a different animal, and our cleaning supplies guide covers washing gear that lives outdoors.

Horse fly mask FAQ

What is the best horse fly mask?

For most horses, the Harrison Howard CareMaster Pro at number two, the only mask here with fleece worked into every seam that touches skin and a mesh stiff enough to stand off the face. If you want the deepest track record instead, the Cashel Crusader at number one has it by a wide margin.

Should a horse fly mask have ears?

It depends on your horse and your insects. Ear covers matter in gnat country, where the inside of the ear takes more punishment than the eye. Plenty of horses will not tolerate them, and an eared mask that comes off in an hour protects nothing, so if yours takes them off, buy the same brand in the no ear cut.

Do horses need a fly mask with a nose cover?

Only some do, usually a pink or bald muzzle. The long nose is a cut of an existing mask rather than a separate product, and both the Cashel Crusader and the Harrison Howard CareMaster Pro offer one. It runs long, so owners of short faced horses such as Arabians say it hangs past the muzzle. A muzzle that is burning is a conversation with your vet.

How much UV does a horse fly mask block?

Only two masks here publish a figure. Cashel states up to 70% for the Crusader and TSZ states 70% for its standard mask. Everything else states UV protection with no number attached, which is why my table marks them as not stated rather than giving them a check.

Is the Cashel Crusader worth it?

Yes, for the fit and the shape. Owners of Percherons, Irish Drafts and warmbloods keep naming it as the one that fits a big head and holds the mesh off the eye. It runs big and the listing names no fleece and no size list, so measure before you order.

How do I stop my horse taking his fly mask off?

Fit is most of it. A mask that is too big collapses onto the face and irritates the horse into pulling it off, so size down when you are between sizes. Then look at the closure: a double locking or dual fastener holds better once dust is in it, and a pull-on has nothing to open at all. Owners of determined horses name the Cashel Crusader and the stretchy pull-on masks.

Can a horse wear a fly mask all day?

Owners on this page do exactly that through fly season, including horses with around the clock turnout. Their practical advice is to take it off daily, check the brow and jaw for rub marks, check the mesh is not resting on the lashes, and rinse the grit out. Anything beyond routine care belongs with your vet.