1. The heating scarf is made of fleece fabric, with a heating element embedded in the middle. The USB connector can be linked to a power bank (not included) for charging. 2. There is a zipper pocket inside the heated scarf for storing small items, convenient to use and can be folded for storage. 3. Hidden switch button with on/off and temperature control function. Long press for three seconds to turn on; initial setting is low heat. Click to cycle through heat settings: blue indicates low temperature, green indicates medium temperature, and red indicates high temperature. 4. Using a 3500 mAh power bank as an example, low temperature setting reaches approximately 42°C, medium around 48°C, and high up to about 55°C. The scarf automatically shuts off after 2.5 hours of use and can be manually restarted. 5. The scarf is well-made with neat stitching, suitable for outdoor activities such as cycling, skiing, snowboarding, skating, mountaineering, climbing, and hiking. Weight: 0.09KG Color: Black Material: 100% Fleece Size: 26x14cm Package Contents: 1 x Heated Scarf Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error is permitted within +/- 1-3cm.