Product InformationdescribeThis electrically heated thermal underwear warms your body, so you don’t have to worry about the inconvenience caused by cold weather. You can enjoy skiing, motorcycles, and mountain climbing. It can also be given as a gift to parents and family members.feature★Large area heats up in 20 districts, which keeps you warmer.★USB 5V interface, mobile power supply.★One-key heating, three-speed temperature control, intelligent heating.★The power interface is insulated and waterproof and can be washed with water.★Zipper pocket design, can put mobile power supply.★Carbon fiber heating wire, no harmful radiation, environmental protection and energy saving.SpecificationColour: BlackSize: S-4XLFabric: Stretch cottonInput voltage: 5VHeating area: 20 zonesQ: Does it include a power bank?Answer: Due to air transportation restrictions, this product does not include power banks. The product price is the price without the power bank, which is very affordable. If the power bank is included, the price will rise. Therefore, this product does not include a power bank.Notice1. There are similar products in the store, please go to the store to buy if necessary.2. Due to the actual shooting, there may be differences between the product picture and the actual color.3. If you encounter any problems, please contact customer service in time, we will reply you as soon as possible.