Thank you for viewing. This product is heated socks. They are new and unused. I have actually used them, and they can be used for various purposes such as skiing, winter leisure activities, and watching outdoor sports. You can adjust the temperature with an app! Due to shipping considerations, the product will be removed from its box and shipped in a Yu-Packet Plus envelope. Please understand. (See photo 7) [Product Description] Heated socks with a 6000mAh battery and 4-level temperature adjustment. - Battery capacity: 6000mAh - Temperature settings: 40℃, 50℃, 60℃, 70℃ - Included: 2 batteries - Features: 360° all-around friction prevention, heat retention, comfort - Size: Suitable for 19-27 (cm) If you have any questions, please feel free to comment.