The Cold Ice Machine combines focused intermittent compression with cold therapy. Intermittent compression with cold therapy provides optimal control of swelling to minimize pain and swelling. Unlike most cold therapy ice machine, Cold offers an external pump which can either be plugged-in or can be battery powered. Offered in a variety of sizes, the Cold Ice Machine is an economical option with a 1-year warranty on the cooler and pad! If you have previously owned an Aircast CryoCuff Cooler in the past and enjoyed your experience, you will love the fact that the Cold Ice Machine delivers comparable comfort and relief but adds the benefit of compression as well. Its a one-two combo to knock out pain via compressive cold therapy.