If you suffer from osteoarthritis in your knees, or if you sleep on your side and often wake with morning knee pain, slide on FootSmart Nighttime Osteoarthritis Knee Sleeve at bedtime & ease the pain of arthritic knees. While you sleep, a soft donut-shaped pad stitched into the sleeve disperses pressure on sensitive areas over the medial knee, holding the knees in proper alignment throughout the night. As a result, you awake with less pain and inflammation. The cushiony brace stabilizes the knee joint, reducing pain and inflammation. Determine size by measuring 6 inches above the kneecap. Material Content: nylon, spandex sleeve, polyester foam construction. Care: Hand wash with mild soap and water. Do not use hot water or hot dryer. Made in USA.