The Cold Rush Cold Therapy unit offers treatment for post surgical pain and swelling. This compact, portable unit works perfectly in the home, at a physician's office, and even on travels. The Cold Rush Cold Therapy unit provides cooling relief to aid in the healing process. The ergonomic Cold Rush pads come in a variety of shapes to fit different ailing body parts, such as the hip, knee, ankle, shoulder, back or hand. The Cold Rush runs silently and supplies cooling therapy for up to six, straight hours.