The Balance MTR Magnetic Knee Wrap provides effective relief from moderate knee pain and swelling. It works well forarthritis aches and stiffness and minor injuries. The knee wrap uses Advanced Biomagnetics inserted at precise locations along both sides and behind the knee. This maximizes magnetic penetration into the knee joint increasing blood flow. This provides more effective natural pain relief and helps improve knee joint function. The Balance magnetic knee wrap is also fully adjustable. It opens up completely and secures with two Velcro closures above and below the knee. This also provides adjustable compression to help control knee swelling and muscle pain. Advanced Biomagnetics for safe effective knee pain relief. Helps regain knee joint flexibility and reduce knee inflammation. Controls body warmth to increase blood flow for sore knee joints. Compression reduces swelling without restricting movement. All day breathable comfort prevents overheating. Wrap-around design provides adjustable fit and compression. Increases blood flow. Soothes sore muscles. Improves injury recovery. Pumps out excess heat and sweat. Pulls in cooler drier outside air. Prevents overheating and irritation. Flexible compression. Soft inner lining. Weather-proof for outdoor use. Size: Large. Knee (inches): 15 -1/4 - 17.