Size: For either knee, this knee stabilizer has been designed with an adjustable strap in order to create a customized fit for most body types. Measure around knee. Adjust to Fit: 13.0 - 17.5 in. When to Use: This Futuro Sport Adjustable Knee Stabilizer is designed to provide support to stiff, weak or injured knees. Wear during activities which lead to discomfort. Washing: Attach all closures before washing. Hand wash with mild soap in warm (not hot) water. Rinse well and air dry. Do not: machine wash, tumble dry, dry clean, or use bleach or fabric softeners. How to Wear: 1. Lay stabilizer over knee, smooth side against skin and with single strap to the outside of leg. Place round hole over kneecap. Wrap middle strap under knee and attach hook closure to the stabilizer. 2. Wrap each of the two remaining outside straps under knee and attach closures to the stabilizer. Adjust all straps until fit is firm, yet comfortable.