Derby Originals premium UV-Blocker fly masks feature a mix of traditional design and premium features to give your horse the most comfortable fit possible while ensuring total protection from biting insects. These fly masks are made from sturdy mesh materials that are non heat transferring and breathable, while also blocking up to 75% of all UV rays. All of our fly masks feature stitched eye darts to prevent the mask from laying against the eyes, fleece edging for a comfortable no-rub fit, new soft-mesh ears ,and secure double velcro closures. If you want to ensure your horse's safety and comfort against pests like flies, mosquitoes, and gnats this summer, look no further than our world class fly masks.