About this Item
【Safety & Smart】: Stable performance, safe and durable, efficient, and environmentally friendly. Built-in USB port, you can connect and charge like a mobile phone. This product needs to be connected to mobile power when it is heated (need to prepare by yourself)**Not include power bank.
【Fast and Long Runtime】: Rapid heating in short time, can maintain blood circulation, reduce muscle strain pain and relieve rheumatism.Perfect for the daily commute, walking your dog in the brisk fall air, tailgating for your favorite football team, wearing underneath your winter jacket or even in a way-too-cold office.