This complete set of hot and cold therapy rings is powered by innovative Cryothermal Technology™ and compatible with the TheraFace Pro (not included). Reduce puffiness under eyes, tension, pain, and inflammation with three temperature options per ring. Features: Cold ring can even be used simultaneously with TheraFace's percussive attachments for a more customized routine Each ring has three temperature settings. Hot: 95, 102 and 109° F. Cold: 79, 72, and 64° F. Includes insulated travel pouch