The Professional's Choice XCool Sports Medicine Boot are designed with an emphasis on cooling and durability. This completely neoprene-free boot is constructed from ultra-lightweight, super breathable materials that provide the support and 4-way stretch Professional's Choice boots are known for. The liner of the boot is XCool, a proven athletics textile with a Triple Chill Effect: Cooling Minerals, Active Wicking, and Rapid Drying. A new, stretch Kevlar patch on the suspensory strap flexes with every step, providing durability without restricting movement. XCool Sports Medicine Boots will keep your horse's legs cool, dry, and protected. | Professional's Choice XCool 4 Pack Sports Medicine Boots in Black | Size Medium