Built for comfort: This neoprene-free boot is constructed with ultra-lightweight straps and super breathable materials that provide the support and 4-way stretch Professional’s Choice boots are known for. Sturdy and durable: A new stretch Kevlar patch on the suspensory strap flexes with every step to provide ultimate support and durability without restricting freedom of movement. Ultimate cooling: The liner of the boot is made with 2XCool performance fabric by brrr°, a technologically advanced textile that combines natural cooling minerals to create a “Triple Chill Effect” that instantly and continuously draws away heat and moisture. Active wicking: Moves moisture away for nonstop comfort. This combined with rapid drying delivers a fresh and crisp experience for horses. The Professional's Choice: A pioneer in horse supplies, 2XCool sports Medicine boots were designed around cooling, comfort, and durability.