Nite Ize is known for making high quality lighting products that keep you and your pets visible and safe after dark. This flexible, low-profile TPU strip is illuminated by a bright red LED and fastens to securely to your dog's collar so you don't have to worry about losing sight of your best friend after dark. It fits any standard sized collar up to 1"" in width, and secures in place using hook & loop fasteners. Its bright, light-transmitting polymer core is illuminated by a super efficient red LED with two mode settings - high-visibility flash and steady glow - which are activated with the push button switch. Visible up to 1000 feet in the dark, and powered by a long-life, easily replaceable battery (included), the Night Dawg LED Collar Cover is available in two colors, with decorative paw prints that provide passive reflectivity for visibility even when not illuminated.