Human back warmer featuring the Catago FIR-Tech PRO technology. Beneficial self-healing and relaxing effects of the active carbon fibres. Can be used before and/or after exercise. Integrated button to adjust the active long wave infrared radiation between 3 different settings, located at the front of the waist for convenient use. A gently contouring design ensures the back warmer sits comfortably around the waist and does not budge during movement. Large front elastic Velcro straps makes it easy to fasten in place unassisted. A perfect product to relieve lower back pain due to injury or to warm-up the muscles before weight lifting activities by increasing blood flow and reducing tension. Can also be used during exercise to physically support the area.