USB Cushion,heated cushion.with a lower current from computer,the slippers can warm and massage your feet with good temperarue Cushion USB warmerPatent No: ZL200620058174. 4USB heated cushion is our patent product in China and we are asking for the patent in the worldwide market.Hope a cooperation with distributors in the worldwide marketsDemention:50pcs/CTN12.5KG/CTN (GM)CTN size 520*410* ...