3M Reflective Thread Yarn has retro-reflectivity, helps the eye perceive objects in low-light conditions when illuminated by a light source. A large amount of reflected light is returned directly to the original light source. MiLTAT G10 military watch straps Glow-in-the-Dark collection is a crossover of nylon thread and 3M Reflective thread. These 3M strips reflect light to make you visible to cars or bikes, high visibility just like glow in the dark. Studies suggest that in the dark, in car headlights a reflective product is more visible than a fluorescent one. Therefore is important to wear reflective clothing or products to improve your safety on the road. MiLTAT G10 military watch strap is tightening up with four 316L stainless steel hardware, looks excellent on military or classic-looking dive watches. Nylon holes are cut and simultaneously sealed using ultrasonic knives and genuine suede at the strap end to prevent fraying.