Not only does the Weaver Leather Mesh Horse Fly Sheet help to keep bugs from bugging your horse, it also delivers important UV protection. The fine, lightweight mesh blocks 98% of UVA/UVB rays. It also helps to protect your horse from pesky mosquitoes that carry West Nile Virus. The all-in-one high neck design offers comprehensive protection to your horse’s neck and body. Thanks to action shoulder gussets, your horse will have plenty of freedom of movement. Double buckle front closures, hook and loop closures on the neck, a belly strap and hind leg ties help to keep this fly sheet in place, even if your horse is a blanket Houdini.