100% brand new and high-quality made.Comes with 22 Heating Zones & 3 Heating Levels: 22 carbon fiber heating elements generate heat across core body areas (waist, back and neck).This upgraded two-control, 22-zone heating underwear that allows you to switch your desired warmth mode with the simple pushOur heated underwear will start heating slowly in seconds when powered on.its widely compatible for outdoor skiing, winter fishing, mountain motorcycle, bicycle, camping, snow hiking, hunting, outdoor attendance, winter street, office daily, etc that meets all your needs.Upgraded designed heating system ensures you enjoy comfortable warmth.Large area carbon fiber wire heater, safe and insulated. Comfortable & skin-friendly, touching smoothly and warmth better.It can help you easily live through a whole winter without wearing bulky clothes under cold condition.It is powered by a USB power supply. It is recommended to purchase a 10000mAh mobile power bank, which has a single battery life of more than 7h, so that you can feel warm in extreme environments.Specifications:Name: Heating thermal underwearCondition: NewInput: 5VLining composition: spandexFabric name: CottonColor: blackMaterial: Alpaca wool+SpandexType: Women's, Men's (optional)High mode:55 (Red Light)Middle mode:45 (White Light)Low saving mode:35 (Blue Light)Power :5V/2.1A Portable SourceNot IncludedSize: M L XL 2XL 3XL 4XL 5XLPackage includes:1 x Tops/1 x Pants(Ship according to your choice