Features:Made from velvet material and polar fleece lining, super soft, warm, and comfortable.The USB port in the zipper pocket works with a 5V/2A power bank (not included) to generate heat and keep your hands warm.Three heating levels with LED indicator lights easily adjust by pressing the button.An adjustable belt allows you to wear this hand warmer around your waist conveniently.Perfect for outdoor activities like camping, hiking, skiing, fishing, and hunting. Y24273B