LED Light up Dog Pet Night Safety Bright Flashing Adjustable Nylon Collar Improved Dog Visibility & Safety Taking your dog out for a walk at night can be a real pain. Once you let them off the leash, it's pretty hard to spot them in the dark. That's why this neck collar with a built-in LED light can solve that problem. With a click of a button you can scroll through several different light options from repetitive flashes to a constant light. Since the collar is around your dog's neck, he/she won't be bothered by the flickering lights. The high grade nylon webbing is durable and built to last. M: Fully adjustable from 15" to 18 - Perfect for Maltese poodle, terrier, pug and similar sized breeds.