Designed to help you feel ready before activity, combining Hyperice heat and dynamic air compression technology to support ankle mobility, flexibility, and movement preparation. The Hyperboot is built to help you warm up wherever you go. Therapy Type Heat: Consistent, controlled heat loosens tight muscles and increases blood flow to prep the body for movement. Dynamic air compression: Pulsing massage flushes fatigue, boosts circulation, and accelerates recovery. Full specifications 12 x 5 x 9.5 in 1 - 1.5 hours on max heat and compression 3.5 pounds Bluetooth® TSA friendly 3 levels of heat. (Level 1: 111F (44C), Level 2: 118F (48C), Level 3: 125F (52C)) 3 levels of compression. (Level 1: 50 mmHg, Level 2: 130 mmHg, Level 3: 210 mmHg) Ideal for Maintain range of motion and accelerate warm up Helps support ankle mobility and flexibility What's included 2 Hyperboot devices 5V dual wall charger 2 USB-A to USB-C charging cords