The Catago Fir-Tech Back Brace provides excellent support for the back while sitting, driving and riding. The Catago Fir-Tech Back Brace features a comfortable, snug fitting, wide elastic brace. Inside lining is covered by the FIR-Tech fabric, which contains woven ceramic fibers that reflect body heat, increase circulation and help to warm muscles and tendons. The Catago Fir-Tech Back Brace must be worn close to the skin to offer maximum support.