This is the new cordless next generation version of the Air-O-Thermo. The Air-O-Thermo Cordless uses air to compress your legs, loosening up tight muscles and breaking up stubborn knots. The increase in blood flow helps to bring a host of benefits like reducing blood pressure, relieving pain & swelling. Optional heat therapy helps to improve circulation, alleviate stiffness, and help relax tired muscles. Relax and recharge your body with the professional-quality compression massage device you can use at home. Kick your feet up and relax while the Air O Thermo Cordless helps to relieve pain, reduce stress, improve muscle recovery, and more.