IMAK Compression Arthritis Knee Sleeve helps relieve pain associated with arthritis, fibromyalgia, and overuse. It is made from a soft, breathable cotton material that provides soothing warmth, while remaining comfortable all day and night. This knee band provides light compression to increase circulation and help the body heal. Tri-band technology helps keep the sleeve securely in place and prevents it from rolling. This product works without clips, velcro, or other fasteners. Simply slip the sleeve on for joint pain relief. To clean the knee brace, hand wash in cold water and allow it to air dry.