Season: WinterMaterial : PolyesterFeature : ThermalGender : WomenFeatures:11 Heating zones:back, neck, shoulder, waist, both sides of the abdomen.When the power is turned on, the whole body can feel the warm.General USB interface power supply, longer service life, anti water splashing and washable.The fashion is warm, comfortable and breathable, and it''s a good partner for your winter going out.Wash method: machine wash or hand washUse 5V/2A mobile power supply (not included)Color: Black, White(optional)Size: M, L, XL, XXLPlease kindly note that our sizes are Asia sizes, which are usually smaller than US & Europe sizes. Please choose your size according to size chart.Packing list:1 x Heating Vest(Power Bank Not Included)