These Crimson Red colored Professional's Choice 2XCool Sports Medicine Boot was designed around three principles: COOLING, COMFORT, and DURABILITY. This boot is neoprene free and is made with ultra lightweight, breathable materials to provide the support and 4 way stretch, you've come to love with your Professional's Choice Boots. The boot liner is made with 2XCool performance fabric by brrr°. This fabric creates its "Triple Chill Effect" by combining natural cooling minerals, active wicking, and rapid drying to instantly and continuously draw heat and moisture away from your horses legs. Plus this boot features a new stretch Kevlar patch on the suspensory strap, that flexes with your horses every step to provide the ultimate support and durability restricting your horses freedom of movement.