- This HoMedics knee sleeve uses gentle air compression to help soothe everyday aches- Choose from four massage programs and five intensity levels to suit your needs- Three heat settings add extra comfort when joints feel stiff or tight- With a 60 cm diameter, it's designed to fit most knees comfortably- Use it while you're watching the tele - it runs super quietly- With a cordless design, it works anywhere without being tied to a plug