Functions and features. 1. Soft fabric: double-sided coral fleece fabric, warm, comfortable and super soft. Internal heating body using high-grade composite fiber, can be quickly heated, safe and stable. 2. Wide range of use: This heating shawl can be plugged into any USB port, very convenient. 3. Quick heating: 3 kinds of temperature can be adjusted (45?-65?), just one button to switch. 4. Safety and quality assurance: Quality and safety assurance, temperature control, overheat protection and short circuit protection are designed to make you rest easy. 5. Suitable for occasions: perfect for camping, travel, outdoor walking, office, home, etc.