rechargeable battery heated jacket 1.attery heated jacket 2. High-tech heating fiber system which could keep ... technology substitute all other kinds of material to improve the safety and efficiency of heat element ; furthermore. it is flexible, ... handchestFront soleBack, both sides of the chest, neckColorRed,black,blue,brownPurple,black,bluegreyBlack, red,orangeGray,brown,pink,MaterialHydro-TexTM,3MTM ...