【USB Heating】: Equipped with USB power supply for convenient heating, ensuring warmth during outdoor autumn and winter activities. 【21 Heating Zones】: Features 21 individual heating zones for enhanced heat distribution across the back and chest areas. 【Sleeveless Design】: Designed without sleeves, allowing for unhindered arm movement while retaining warmth in core areas. 【Zipper Closure】: Includes a functional zipper closure for an easy and secure fit, adding a practical element to the garment. 【Regular Length】: Cut to a regular length, providing a balanced silhouette that suits various body types without excess bulk.