Ships from Hong Kong. This warm USB powered foot warmer keeps your feet warm while you are working in office or watching TV,playing games in winters. It is a good solution for cold feet when sitting in front of the computer. It provides a steady flow of infrared heat to the bottom of your cold feet without scalding your skin. Detachable, after long time using, you could detach the foot warmer and clean for coral fleece surface. Durable,could be used for lifetime by propriate using. A must have item for the cold winter.