Crown and jowl are made with a moisture-wicking diamond-knit fabric Ears are crafted from a sport knit known for its soft feel and durability Face mesh blocks 80% of harmful UV rays and reduces solar glare Lightweight and resistant to stains, mud, dirt, and debris —plus we’ve added coating to the mesh and added double seams for enhanced durability For average horse and small warmblood - for best results follow your horse’s halter size UltraShield Fly Masks are the new standard for protection and comfort, our horse fly mask design keeps horses cool, dry, and comfortable using high-tech fabrics originally developed for human performance clothing. It’s designed to stay put with two-way controlled stretch fabric on the crown and jowl, extended fabric behind the ears, and a strong double-locking hook and loop closure featuring wider velcro. It’s also designed to protect, with structured eye darts and a mesh that blocks 80% of UV rays. Plus, rolled inner seams prevent rubs and irritation. Guaranteed to last through one fly season.