Nite dawg, 5', red, led dog leash, with its 18" flexible, led light transmitting polymer core & a reflective stripe for passive reflectivity, made of high quality, durable nylon, weather resistant, enclosed switch that allows you to choose illumination modes: glow or flash, secured to your dog's collar with its strong, rotating spring clip, this leash provides visibility through endless late day, late night & early morning outings, led has a life of about 100,000 hours & a replaceable 100 hour battery, included, may use with the nite dawg collar, not included.