【Heated Vest Version Upgraded】 Suitable for outdoor activities, snowmobiling, motorcycling and climbing, climbing, camping, hiking, skiing, fishing, hunting or office, fall and winter business activities. The vest comes with a USB cable for Power Bank connection. Connect and use an external rechargeable mobile Power with USB 5V / 2A output （Heated vest without Power Bank）. 【3 Mode Temperature Control + Far Infrared Heat Generation】 The heating vest has multiple heating elements and has excellent heat retention performance. When setting the temperature, press the button to change the temperature. There are three levels of temperature setting: strong (red), medium (white) and weak (blue). Fast warm-up of 3 seconds and no radiation protection are compatible. 【High Quality Fabric + Blood Circulation Effect】Thick and soft fabric blocks the air flow and forms a single thermal insulation layer that effectively keeps the body air warm. Maintains heat circulation inside and collects heat everywhere. Helps the meridians and promotes blood circulation. In addition, it relieves symptoms of dysmenorrhea, joint pain, lower back fatigue, and transfers heat over a wide area. 【Several Sizes】 Please select the desired size according to the size chart. Multiple sizes make this stylish, heated unisex clothing suitable for men, women, teenagers and the elderly. Hand and machine washable: please remove the power bank, zip up the bag before washing. Place the vest in a laundry bag for machine wash. do not wring it out forcefully when washing it by hand. 【Service】 The actual delivery time is usually only 7-15 days. Please check the size chart in the last photo or product description carefully (not the Amazon size chart) before placing an order. Our size is Asian size smaller than European size, it is recommended to choose one size larger than usual when purchasing; If you are between these two sizes, please choose the larger size.