Nite Ize NiteHowl LED Dog Light Collar Safety Necklace MAKE PETS SEEN + SAFE - With this bright LED pet necklace that illuminates a full 360 around your dog's neck, your pet will be visible to you and others during nighttime activities ADJUSTABLE FIT FOR YOUR DOG - This pet necklace can be cut to fit dog's necks small to large from 12" to 27". It should be worn in addition to their collar, not as a substitute REPLACEABLE BATTERIES INCLUDED - Powered by replaceable alkaline batteries, this safety necklace can be used over and over again HIGH VISIBILITY GLOW + FLASH MODES - Push button on, flashing, and off modes to keep your four-legged friend safe and visible during early morning and evening walks WEATHER RESISTANT FOR THE WATER LOVING DOG - whether walking in the rain or splashing in the water bowl, this pet light is water resistant WORRY-FREE GUARANTEE - all Nite Ize products are backed by our Worry-Free Guarantee