The Professional's Choice 2XCool Sport Medicine Boot was designed around cooling, comfort, and durability! This neoprene-free boot is constructed with 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 made with 2XCool performance fabric by brrr°, a technologically advanced textile that combines ultra cooling minerals, active wicking and rapid drying to create a "Triple Chill Effect" that instantly and continuously draws away heat and moisture. A new stretch Kevlar patch on the suspensory strap flexes with every step to provide ultimate support and durability without restricting freedom of movement.