... Size: S, M, L 4. Packaging: OPP bag USB Bear Paw Indoor Foot Warmer Pad 1. Material: Velvet, ... Electric Heat Slipper Fleece Boot Shoes OEM Use computer USB to supply power, 5V voltage, safe and reliable; also ... carbon-fiber will generate far IR, which is good to our healty. And it will not have electromagnetic ... zip. And can be placed easily when boots dry. USB cable:1.5 m, white or black. Material: ...