1. This is a rechargeable hand warmer made of durable materials. 2. It has a simple appearance, which may contribute to its popularity. It can keep you warm and comfortable for several hours. It is simple, practical, and reusable, making it a good gift choice for friends. 3. Features: - Color: Grey - Material: Flannel - Size: Approximately 30.00×18.00×18.00 cm / 11.79×7.07×7.07 inches - Note: It can be heated to 50 - 60 degrees Celsius. - Made of certain materials, it is relatively durable. - Equipped with a USB data cable, it can be recharged multiple times to provide long - lasting warmth. - It is suitable for people who work or study on the computer for long periods in cold weather, such as office workers, students, and gamers. - With a suitable size, it can be put in a bag and taken around, and it can warm your hands quickly and safely. - No matter where you go, it can help keep you warm in winter. It has a smooth and comfortable touch.