This is the flexible wrap with 60 integrated LEDs that provide infrared therapy for relieving back pain. Using technology developed by NASA to heal astronauts’ injuries, the wrap is ideal for stimulating blood circulation, relieving swelling in joints, and loosening tight muscles in all parts of the body. LED infrared therapy using infrared and red LED lights has been shown in a study at the Children's Hospital of Wisconsin in Milwaukee to reduce painful inflammation by up to 37%. Unlike wands that require being held for extended periods, this hands-free device secures to the back, knee, shoulder, arm, or leg with adjustable Velcro straps. Treating an 8" x 5" area in a 20-minute session, its FIR and infrared energy penetrates deep into tissue and joints for all-natural and drug-free pain relief. Can be used several times a day. With USB cable and AC plug. 12" L x 9 1/2" W x 2 1/2" D.