Solar Cooling Cap (HSL001)

Solar Cooling Cap: 1 the solar cell: the non-brilliant silicon solar cell 2 the material for making the outside: the full cotton yarn card (Recommend) 3 after puts up the knot: according to the needs (Recommend plastics seven apertures in the human heads are put up the knot) 4 the customer can have something making order to the pattern or the characters (can select silk screen stamp or computer embroider).