[Warm Tips] Product does not include power bank.[Material] 80% Cotton, 20% Polyester.[Smart Heat Across Body] 5 carbon fiber heating elements immediately heat up the core body parts of the left and right abdomen, the left and right shoulder, and the mid-back in a matter of seconds; With only a single button click, you may change the 3 heating settings (high, medium, and low).[Long-Lasting Warmth] It comes with a 7.4V, 5000mAh, Venustas-certified battery and a USB connector for charging smartphones and other mobile devices, the heater can operate for up to 8 hours.WASHABLE SUPPORT - The heated zip-up hoodie is machine washable or can be hand washed. However, please remember to remove the power supply and ensure it is thoroughly dried before use.CASUAL DESIGN - Unlike bulky winter clothes, this USB heated hoodie is lightweight yet keeps the body warm. It is suitable for various occasions such as skiing, hunting, camping, fishing, hiking, or other winter outdoor activities.