Features1. Humanised heating part design: the heating block is specially designed for the back side of the neck in the cold parts, large capacity zip pocket to prevent the loss of items2. 2. Material: As the inner heating wire is made of carbon fibre wire imported from Japan, unlike metal copper wire which will conduct electricity, it can also be washed freely in the washing machine, so you don't need to worry about the cleaning of heated clothes.3. 9 ZONE HEATING: Anti-fleece calendering is tighter, 9 zone heating.4. Comfortable neckline: exquisite cut edges, simple atmosphere more comfortableProduct SpecificationGender Male FemaleModel: Heated VestMaterial: polyesterLabel Size: XL, 2XL, 3XLWarm tips: Batteries are not included.This product needs to be connected to a mobile power supply when it is heating up. When unplugged, it will automatically stop heating 5V voltage, giving you a sense of security.Washable, long service life, power connector is insulated and waterproof.AttentionDue to different monitors and lighting effects, the actual colour of the item may be slightly different from the colour shown in the picture. Thanks!Please allow 1-2 cm measurement deviation due to manual measurement.Product Includes1 x Heating Vest (Batteries not included)