Double-sided grey reflective yarn, ranging from 0 mm to 3mm, is a special type of thread that can reflect light on both of its surfaces. The yarn is designed with simplicity in mind, making it easy to incorporate into various materials and fabrics. The thickness of the yarn varies from 0 mm to 3mm, providing flexibility for different applications. Its reflective properties enhance visibility in low-light conditions, making it a practical choice for safety-related purposes.