Description: The heated slippers are USB powered. When the slippers are first turned on, it will take one to three minutes to warm up your shoes. The heated slippers could keep your feet warm and cozy. You could send it to your family or friends as Christmas gift or birthday present. Made of plush, the heated slippers are safe and comfortable to wear. There is one size, it is suitable for most of the people. It is great for soothing cold, tired or aching feet and can be applied to various occasions, such as office, dormitory, home, etc. A necessity for Winter. Item Name: Foot Warmer Material: Plush Voltage: 5V Gender: Unisex Features: Anti-slip, Warm, Soft Power Type: USB Powered (Included Heating Pads) Size Details: Size: One Size for Men(39-43): 28cm x 9cm x 9cm/11.03" x 3.55" x 3.55" (Approx.) for Women(35-39): 27cm x 9cm x 9cm/10.64" x 3.55" x 3.55" (Approx.) Notes: 1. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. 2. Please allow slight dimension difference due to different manual measurement. 3. There is a zipper between the shoes and the sole to place the heating chip. When cleaning, open it and take the chip out. It can be washed by hand or machine. When using it again, make sure the shoes are dry. 4. Please check if the USB port is connected well when using it for the first time, otherwise it may affect the heat. The maximum heat temperature is 55 degrees. 5. When not in use, please pull out the power supply in time to avoid prolonged heating. Package Includes: 1 Pair of Foot Warmers 1 x USB Cable