Cold therapy with the AirCast¨ CryoCuff¨ combines compression and cold. Compression minimizes swelling, while cold minimizes pain. Set consists of water cooler and cuff. Cooler holds enough ice and water for 8 hours of cryotherapy. Compression is gravity controlled. Cuffs are made of nylon and vinyl. Use with gravity feed (included) or continuous AutoChill electric pump (sold separately).