How to heat: Simply attach the USB to a power bank to heat the coat. Design: Features a cosy hood, long sleeves and a zip fastening. Material: Made from comfy material (100% polyester). Warming jacket: Get a men's heated puffer jacket! Colours: Choose from black, red or blue colours. Sizes: Choose from sizes M, L, XL, 2XL, 3XL or 4XL. | Men's Heated Puffer Jacket - Black | Wowcher