Intuitive use: This electric portable heating pad uses USB to charge, which is more convenient. It has three different adjustable temperatures and three different massage modes, you can choose the mode according to your needs.Automatic design: The portable heating pad is designed for automatic shutdown. If you fall asleep during use, our product will automatically shut down within 20 minutes when it detects that you are not moving to ensure your safety. If you want to use it again, just open it again.More ergonomic: the back of our heating pad adopts a very soft and comfortable contact surface, which makes you feel comfortable and can dissipate heat evenly. Taking into account the waist size, our waistband can be adjusted up to 50 inches (approximately 127 cm).[Wide application] Regardless of whether you are resting, reading, driving, or working, you can use our products without causing too much influence on yourself.Continuous improvement: from thermos to warm waist stickers, there are no restrictions on the human body. Compared with previous products, the new generation of heating pads is more expensive, but does not require an external power supply. Just need to be fully charged in time, you can enjoy the warmth.