Sizing: Measure around leg, 3 inches above knee. 12.0-21.0 in/30.4-53.3 cm. See product care on bottom of package. Easy to Apply: 1. Align opening over kneecap. 2. Fasten bottom section behind knee. 3. Fasten top section behind knee. 4. Secure top and bottom tension straps. Product Care: Handwash, cold. Do not bleach. Line dry. Air dry. Do not iron. Do not dry clean. Do not use fabric softener.