Description The Professionalâs Choice Brrr 2XCool Sports 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 Professionalâs Choice boots are known for. The liner of the boot is made with 2XCool performance fabric by brrr, a technologically-advanced textile that combines natural cooling minerals, active wicking, and rapid drying to create a âTriple Chill Effectâ 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. The Professionalâs Choice 2XCool Sports Medicine Boots featuring brrr will keep your horseâs legs cool, dry, and protected.