1. The heating scarf is made of fleece fabric, with a heating sheet in the center. The USB connector can be connected to a power bank (not included) for charging. 2. An internal zipper pocket is designed to hold a power bank, offering convenience and easy folding for storage. 3. Features a hidden switch button with key-based control: press and hold for three seconds to turn on; the default setting is low heat. Press to cycle through temperature levels—blue indicates low, green indicates medium, and red indicates high. 4. Using a 3500 mAh power bank as an example, the low-heat setting reaches approximately 42°C, medium heat approximately 48°C, and high heat approximately 55°C. The scarf automatically powers off after 2.5 hours of continuous use and can be reactivated afterward. 5. Precisely crafted with neat stitching, suitable for outdoor activities including cycling, skiing, snowboarding, skating, mountaineering, climbing, and hiking. Weight: 0.09 kg Color: Black Material: 100% fleece Size: 26 x 14 cm Package Contents: 1 × Heated Scarf Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance is ±1–3 cm.