Three modes: The gilet heats up at the touch of a button, with three settings so you can find the perfect temperature for you. Comfortable: The heating zip-up vest is perfect for keeping warm while out and about this winter, with five heated areas across the upper body. Great for wearing to work, camping, biking and more! USB: Charge using the USB cable provided. Heated vest: Get a unisex USB graphene heated vest. Material: Made from polyester. Sizes: Choose your size from M, L, XXL or XXXL. | USB Unisex Graphene Heated Vest - Black | Wowcher