Note: Please allow 1?3cm error due to manual measurement. Thanks for your understanding. specification: Item Type: Neck Wrap_x000D_Material: Mirco velvet, graphene heating sheet_x000D_Size: Approx. 51 x 13cm / 20.1 x 5.1in Features: 1Graphene Heating Sheet: Rapid heating, even heat conduction, effectively relieve neck pain and promote blood circulation. Match with moxa hot compress for better effect. 2Adjustable Temperature And Time: 3 levels of temperature adjustment and 3 gears timing function, you can regulate temperature and timing according to actual needs. 3Safe To Use: 5V safety voltage, overheating automatic protection, safe timing power off. USB interface, multiple power supply modes such as mobile power, computer, charger. 4Mirco Velvet Fabric: Heated neck wrap adopts high quality mirco velvet fabric, soft and skin friendly, wear resistant, keep warm and comfortable to wear. 5Hook And Loop Fasteners: Hook and loop design, strong stickiness and no pilling, free adjustment of tightness, fits the neck curve, easy to wear and take off. PackageList: 1 x Neck Wrap 1 x USB Cable 1 x Wormwood Bag