The hot & cold ice pack for knee is professionally designed for knee, ice pack made of a durable soft touch material and medical-grade gel, stays flexible even when frozen. It will cover knee injury area well and the elastic straps will fasten ice pack on knee securely, washable and reusable. The elastic strap help keep hot & cold pack bag on your knee, elbow, shin, thigh or any part of your body. You can walk around, and not worry about taking off the ice pack. Wearable knee ice pack serves as hot or cold pad. Chilled in a freezer for cold therapy to help relief from strains, sprains to help reduce swelling and blood flow. For hot therapy, heating in the microwave or hot water to promote blood flow while promoting healing.