Size & Fit: One size fits all, UnisexTechnologyOur heated scarf uses Insta-Warm technology, a revolutionary new method of heating clothing that eliminates cold spots and uneven heating found in traditional carbon fibre heated jackets. Insta-Warm is an ultra-thin heating layer integrated to the internalfabric that provides heat quickly and evenly throughout.DesignLayered with revolutionary warm technology, breathable fabric & Ultrasoft fauxfur blend, this heated accessory is a cold weather essential. The pull-through scarf design ensures this cosy neck-warmer stays in place, keeping the heat right where youwant it so you can stay warm and comfortable in the cold.A discreet, zippable power-pocket provides the perfect home for a lightweight power bank (not included).SpecificationsDimensions: 70cm x 10cmPower Input: 5VWattage: 5WConnector: Standard USBHeating time: (EX: A typical 1800mAh powerbank)Full Heating: ~ 2 hoursHalf Heating: ~ 3 HoursEco Heating: ~ 4 HoursPlease Note:1. This product is shipped without batteries (a USB powerbank), and you need to use your own powerbank2. Please do not connect to the powerbank with the scarf when not in use for a long time3. The heating time depends on the capacity of the powerbank4. Do not use high temperature water or strong acid detergent