Therapeutic Exercise boots for front and leg. Combines the support and protection of an exercise boot with the unique textile material of Back On Track. Fibers infused with ceramic particles reflects back body warmth as a far infrared wave that effectively increases and stimulates blood circulation, reduction of inflammation and swelling, and improved mobility. Heavy duty neoprene shell with four elastic Velcro straps. Fabric: Shell: Neoprene. Lining: 50% cotton 50% Welltex polypropylene ceramic textile. Available in Front and Back, sizes: S, M, and L.