Whether you're recovering from a nasty injury, or you're resting up during the rehabilitation phase knee-replacement surgery, Aircast Cryo/Cuff Knee Therapy products have an unrivalled level of combined compressive and cold therapy to offer you. These units work by pumping freezing cold water from the attached cooler into the brace that envelopes the knee. This rapidly accelerates blood flow and enhances circulation to reduce pain, swelling and scar tissue build up.