1. The heated scarf is made of fleece fabric, with a heating element embedded in the center. It connects via USB to an external power bank (not included) for operation. 2. An interior zipper pocket provides secure storage for a power bank, offering convenience and easy folding for compact storage. 3. Features a concealed switch button with a press-and-hold activation: hold for 3 seconds to power on (starts at low heat); single press cycles through three temperature levels—blue (low), green (medium), red (high). 4. Using a 3500 mAh power bank as an example: low setting reaches ~42°C, medium ~48°C, high ~55°C. Automatically powers off after 2.5 hours of continuous use; may be reactivated afterward. 5. Precision stitching and high-quality construction make it ideal for outdoor activities including cycling, skiing, snowboarding, ice skating, mountaineering, climbing, and hiking. Weight: 0.09 kg Color: Black Material: 100% polyester fleece Size: 26 x 14 cm Package Includes: 1 x Heated Scarf Note: Color may vary slightly due to screen settings and lighting conditions. Size tolerance: ±1–3 cm.