This product is a luminous embroidery thread made of polyester. It is made of luminous fiber, which is a functional and environmentally friendly new material made of rare luminous materials. The fiber is a luminous fiber made of long afterglow rare earth aluminate luminescent material based on the spinning stock by special spinning. After absorbing visible light for 10 minutes, the luminous fiber can store the light energy in the fiber, and continuously emit light for more than 10 hours in the dark. When there is light, the luminous fiber presents various colors, such as red, yellow, green, blue, etc. In the dark, noctilucent fibers emit red and green light. Noctilucent fiber is a high-tech product with bright colors and no dyeing The material of luminous yarn is high strength luminous yarn, which is made of luminous filament worsted and twisted