The reflective part of the reflective vest is made by the advanced process of focusing and post-processing, using the principle of the refraction of the glass micro-beads that produce refraction and high refractive index of the lattice of diamonds. It can reflect the direct light from a distance back to the luminous place, and it has good retroreflective optical performance in day or night. Especially at night, it can show the same high visibility as during the day. Safety clothing made of this high-visibility reflective material can be easily discovered by night drivers regardless of whether the wearer is in a remote place or interfered by light or scattered light. The appearance of reflective materials successfully solved the problem of "seeing" and "being seen" at night.