USB powered: 5v, plug and play, safe and reliable Knitting wool material, durable soft & warm Cute gloves. A good gift for your family and yourself Built-in heating pad , temperature range:40-42C, warm your hands while you are working Simple and practical fingerless design allow your fingers to move flexible. Perfect for wearing while gaming, typing, and operating the mouse. This product uses high-tech heating materials, uses USB 5V low voltage, energy saving, and reliable. The product is soft and comfortable, and it can move freely. As long as you open the inside of the glove and take out the heating sheet inside, it turns into a lightweight glove, which can also be cleaned. In a short period of time, the temperature can be about 42C which is very warm for the human body. The design is beautiful and generous, which is suitable for personal use and gifts in winter.