Overview Heating Technology: USB-powered electric heating system with multiple zone options for targeted warmth Cold Protection: Designed for winter use with effective thermal insulation Material Quality: Polyester fiber fabric with cotton filling for comfort and durability User-Friendly: Simple style with non-ironing treatment and practical zipper pockets Versatile Design: Fit-type silhouette with ribbed hem, suitable for leisure and outdoor activities Specifications Material: Polyester fiber (main fabric and lining), cotton filling Heating Function: USB-powered electric heating Style: Simple, solid color or camouflage patterns Sizes: S to 8XL Features: Non-ironing treatment, zipper pockets, straight hem, ribbed bottom Length: Standard (50cm < length ? 65cm) Packing List Heating vest*1 USB cable*1