Why We Love This A fly mask that lasts! The Kensington Fleece Fly Mask is constructed of the innovative, extremely durable, fully breathable mesh Textilene fabric, a breathable mesh fabric that's vibrant and durable. It's made to withstand tough outdoor use. The densely woven PVC strands enable this fabric to be heat-sealed while the high UV performance ensures protection and long lasting color. This fabric provides years of reliable relief against the sun, wind and dirt. Plus, the Textilene fabric is fully recyclable. Favorite Features Double eye darts for maximum room around the eyes and added safety Heavy duty double locking VELCRO Brand Closure and elastic neck strap will ensure a correct fit and will keep the mask on and in place Fleece around the nose and neck will keep your horse comfortable Provides 73% UV protection Sizing It Up Small (Large Pony/Yearling) Medium (Arab/Cob) Large (Horse) X-Large (Warmblood/Small Draft) Kensington Fleece Fly Masks run slightly large, so if you think your horse may be between sizes, please size down.