Flexible polymer impact shield is patent pending and protects the cannon bone, tendons and soft tissue of the rear portion of the leg Non-restrictive ergonomic design provides a close fit and contours the natural curve of the horse's leg to allow for a full range of motion with less bulk Dynamic Sling System lateral suspensory support strap helps to prevent hyperflexion and soft tissue damage to the lower leg during strenuous maneuvers Four-way stretch virgin neoprene stays soft and supple and is breathable for effective heat dissipation Premium elastic bound boot edges help to keep dirt and debris from entering the boot while stretching with the horse's leg to allow for proper circulation Quick drying boot liner made from soft, smooth Lycra® is easy to clean and dries quickly High grade hook and loop closures on straps maximize boot life