Petlove Dog LED Light Safety Collar Flashing and Solid, Ajustable Nylon For Medium And Large Dogs LED light glows and flashes in darkness,Makes your dog visible in complete darkness Never lose sight of your dog during walking at night;Drivers can easily see your dog which will prevent vehicle mishaps Easy to use:Solid bright light And 3 flashing settings by click ON/OFF button; Adjustable buckle and hand grip webbing make the collar durable and comfortable for your loved pets. Suitable for medium and large dogs.