Check out Railhead’s M11LED safety light! The M11 is a highly versatile, highly visible, waterproof safety solution designed to help meet company or personal safety goals. Weighing less than 1 oz. and measuring only 1.4” high and 1.9” long, the M11 is one of the smallest, lightest, and most versatile safety lights on the market. Our push-button switch easily changes your light from steady-on to flash mode.