RED Nite Dawg LED Reflective Leash. The Nite Dawg Leash is made of high-quality, durable nylon measuring 5 feet in length with an 18-inch flexible, LED light-transmitting polymer core, and a reflective stripe for passive reflectivity. Featuring a weather-resistant, enclosed switch that allows you to choose illumination modes (glow or flash). Its efficient LED bulb has a life of about 100,000 hours, and a fully replaceable 100-hour battery is included. Secured to your dog's collar with its strong, rotating spring clip, this leash makes both you and your pet's presence obvious to everyone sharing the road from dusk till dawn.