Cashel's Crusader Fly Masks are among the top-voted fly masks year after year and are trusted by horsemen of all backgrounds to protect their equine partners from flies. The Mule/Donkey Fly Mask with Ears is made from soft coated nylon micromesh, making it a very comfortable choice for fly protection for your mule or donkey. Its patented three-hole cap and double dart construction keep the material well away from sensitive eyes, lashes, and temples without damaging the forelock, providing a more natural and complete field of vision. This mask blocks up to 70% of the sun's damaging UV rays, protecting them from eye problems and sunburn. This mask is great to keep pests and irritants out of their ears. Our fly mask closure strap features pre-stitched guidelines in 3/4-inch increments, allowing you to trim excess length for a perfect custom fit. See size chart for details on how to measure. XX-Small/Mini Donkey (27"); X-Small/Large Mini Donkey (34"); Small/Donkey (35-37"); Medium/Large Donkey (38-40"); Large/Mule (40"-42"); X-Large/Large Mule (42"); XX-Large/Mammoth Mule (50")