Glovii 7V Battery Heated Shirt - Black The heating element is constructed from carbon fibres offering extraordinary reliability and durability as well as medical properties, thanks to infrared waves A pocket for storing the battery offers you comfort of use every day The heating element is located at the front and the back of the jumper, providing even heat distribution The thermoactive fabric allows for quick moisture absorption and has biostatic properties, thanks to which it supports the operation of the heating system Fabric: 94% polyester, 6% spandex