Oppo: Maximum Support OP1063. Provides maximum support to mid and lower back without restricting normal movement with: Four pliable metal stays provide extra support. Retains body heat for constant moist heat to lower back muscle group. Hook and loop closure allows for a wide range of adjustable compression. 25cm width depth at the back narrowing to 13cm width depth at the front. Made from breathable neoprene with a cotton inside lining for extra comfort. One size fits all 26-44" Waist.