Description:Material: flannelSize: 50*30cm / 19.50"*11.70"Colors: yellow, blue, grey, greenFeature:1. Intelligent constant temperature USB heating pad, convenient for controlling temperature anytime.2. Uses safe heating technology to ensure safety during use.3. Comfortable and soft heating blanket, can be used for warming up on cold days or soothing muscle fatigue.4. USB interface design, easy to connect to computers, power banks, and other devices, enjoy warmth anytime, anywhere.5. Quick heating effect, plug and play, quickly warms up, saving energy.Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you.2. Due to the difference between different monitors, the image may not reflect the actual color of the item.Package includes: 1* Intelligent constant temperature USB heating pad + 1*usb cable