Made with the highest quality and safest heating technology, the ActionHeat 5V-Battery-Heated Sleeping Bag provides hours of comfortable warmth. Built-in heating panels with ActionFlex material made from ultra-fine carbon-fiber provide lightweight warmth, comfort, and versatility. FAR infrared heating and ActionWave heat-reflective technology produce hours of heat. The powerful Tri-Zone heating system includes 3 built-in heating panels, strategically placed to warm your core body temperature. The super-powerful, extended-life 5V Power Bank 9300mAh powers the heating and can also be used to charge your phone, tablet, or any USB-charged device. To use, fully charge power bank with the provided charger kit. Connect the power bank to the USB plug located in the pocket. Press and hold touch-button control on the sleeping bag for 3 seconds to turn on heating. Press the touch button to adjust the temperature. A breathable layer of synthetic fill insulation works to preserve warmth. High: 140F for 2.5+ hrs.; Medium: 130F for 5+ hrs.; Low: 110F for 6+ hrs. Note: Heating times will diminish if used to charge other devices. Machine wash. Imported.Manufacturer style #: AH-SLB-5V-B. ActionHeat 5V 9300mAh Power Bank Also charges your phone, tablet, or USB-charged device Built-in heating panels with ActionFlex material FAR infrared heating ActionWave heat-reflective technology Strategically placed Tri-Zone heating system Breathable synthetic fill insulation