This heated backrest can relieve pain in your upper, middle, or lower back and spine. Ergonomically designed, it keeps your spine in the correct alignment, improves bad posture. Suitable for office chairs, car seats, house chairs ... The flexible velcro fastening bands prevent the back cushion of the chair from sliding down. The pillowcase is removable and machine washable. - Easy 1 button operation. - Ultra-fast heating system. - Illuminated 3-power switch. - Automatic shutdown at 90 min. approx. - Machine washable cover. - Product approved by Oeko-Tex Standard 100. It is subject to permanent quality control. - Connection to the electrical network with practical spiral cable. - For an ergonomic posture + warmth (use at work, at home or in the car). - It adapts to any backrest. - With car adapter. - Includes flexible velcro fastening bands. - Power 20 w.