◾ Color: Black ◾ Unisex, Size S (23-24.5cm) ◾ Only tested for functionality, but it is new and unused. The original box has been discarded, so it will be shipped in a different box. (Instruction manual included) ◾ Please purchase only if you understand that this item has been stored at home. (From the website) ● Fabric: Cotton, carbon fiber, polyester ● Functions: Electric heating, cold protection, heat retention ● PSE certification: The dedicated battery for this product complies with the technical standards required to obtain the PSE mark. ● Uses a Japanese-made heater with high thermal conductivity, providing rapid heating in just 3 seconds! ● Rechargeable and energy-saving: Can be powered by a battery, so you don't have to worry about high electricity bills, making it very gentle on your wallet. No need to frequently take it on and off, making it convenient to move around freely. ● Anti-slip: The bottom has a soft and breathable mat with an anti-slip treatment, making it less likely to slip during use. ● Washable at home, easy to care for! ● Cordless and separate left and right type, so you can warm your feet while cooking or doing housework!