The Biowave Home BWH-S Pain Therapy System is a complete kit designed to provide pain relief and therapy in the comfort of your own home. With its blue color and innovative technology, this system offers a convenient and effective way to block pain and promote healing. The brand, biowave, is known for its high-quality products in the realm of health care supplies, making this kit a reliable option for those seeking relief from chronic pain. This kit includes a Knee wrap sized L/XL. This does power on and appear to be in working order as seen in last pictures, however, I don't know anything about this item so it will be an As Is purchase.