Now you can pamper your sore, aching legs, ankles and feet. Chambers inflate and deflate to provide a soft, soothing massage to help reduce swelling, ease stiffness and reduce pain. Helps improve blood circulation. Fits calves up to 16" and thighs up to 23". This is not a medical device. Consult your physician before using. Remote requires four "AA" batteries (sold separately). Wipe clean. PVC.