Made from flexible, plastic mesh to allow air circulation, Shoofly Leggins are easy to attach, comfortable to wear, and will not sag due to their unique sewn-in plastic stays. And they're patented! Features: Chemical-free. Will not sag. Easy-to-use Velcro fasteners. Prevents painful bites from flies and other biting insects. Reduces stress and stomping caused by fly bites. Prevents Botflies from laying eggs and causing botfly larvae infestation. Decreases healing time of abrasions and wounds by allowing air flow. Reduces joint irritation, hoof problems, and muscle fatigue caused by continuous stomping. Does not restrict blood flow or range of motion.