The reflective part of the reflective vest is made by using the principle of glass beads with high refractive index and refraction generated by the micro-rhomb of the crystal lattice. It can reflect the direct light from the distance back to the luminescent place, and has good retroreflectance optical properties in day and night. Especially at night, be able to enjoy the same high visibility as during the day. The safety suit, which is made of the high-visibility reflective material, is easier for night drivers to spot whether the wearer is in a remote location or under the interference of light or scattered light. The appearance of reflective materials successfully solved the problem of "seeing" and "being seen" overnight driving.