The Water Therapy Boot is an excellent attachment option for treatment with the Aqua Relief or Arctic Ice Systems. This listing is for the Bootie as an accessory item, and does not include the ARS or AIS system. There may be times when you need professional quality treatment to help with injuries or chronic issues, but you would love to be able to get it the comfort and convenience of your own home and on your own time schedule. The ARS and AIS therapy machines are hospital grade equipment, so you can receive the very best care whenever and wherever you need it. Both systems give your body localized support to get straight to the problem with hot or cold water is circulated around the injured body part. The cryo-cool system circulates cold water for up to 5 hours; while the heating system revs up in less than 10 minutes and can give you the desired heat level for as long as you need it. The circulating ice water therapy settings can cool and soothe inflamed areas for up to 8 hours and allow you to freely move your joints, unlike unsecured ice packs that can frustratingly change position and fall off with any movement you make. Hot water therapy settings heat up in less than 10 minutes but will not go above safe heat temperatures in order to lessen the chances of damage to your skin. Hi/low settings, a 15-minute incremental timer, and auto shutoff help you to take control of your own treatment. This PMT product is covered by a limited 90 day warranty.