7.4 V/15 W High-Power Heated Sweatshirt:Our heated sweatshirt features carbon fiber heating plates to warm the abdomen, back, and waist at once, with three heat settings. The 16000 mAh detachable battery, while heating fixed elements lock in warmth. Lightweight fabric ensures a hard-wearing outer and a soft inner layer. Its machine washing, anti-static fabric, and independent pocket are thoughtful. it is ideal for worksites, skiing, commuting, and air-conditioned offices.