The Mud Fever Premier Equine black outdoor boots are made from ventilated Air-Tech neoprene for maximum breathability. Anatomically shaped to provide superior comfort for your horse while covering the cannon bone and soft tissues. Fatigue is reduced in the tendons, fetlock, ligaments and suspensor. These Premier Equine boots cover the entire lower limb and pastern area, making them ideal as a preventative measure against mud fever. Suitable for year-round use in paddocks. Can be used on both fore and hind legs. The layers of fabric work together to evenly distribute airflow and manage heat release. Excellent stretch and recovery properties allow the boots to mold and retain its shape without hindering the horse's natural movement action. The pique jersey exterior and lining are moisture-wicking, highly breathable, quick-drying and soft to the touch. The perforated neoprene allows heat from the limbs to escape and cool air to enter the boots and circulate through the limbs. They also do not retain water. These boots have been carefully hand packaged in a reusable zippered storage bag to keep your tack tidy when not in use.