Slow Vehicle Warning Triangle with Mounting Hardware Aluminum Alloy Reflective Warning Signs Crafted from aluminum alloy, this slow moving vehicle triangle sign ensures durability and longevity; It does not bend, deform or break and will not fade. This reflective safety sign is the suitable size to effectively communicate to other driver that your vehicle is moving slowly. Made with high-brightness, engineering-grade reflective film, it boasts extremely strong reflective properties, ensuring clear visibility from a distance during the day and providing even greater warning when illuminated by vehicle headlights at night. The foldable, quick-unfolding design requires no tools and can be set up in seconds in an emergency, giving drivers valuable time for safety.