Your pooch will rave over the Nite Ize Nite Dawg LED Light-Up Dog Collar. Nite Ize made this light-up dog collar with a bright LED core wrapped in durable nylon. The Nite Dawg LED Light-Up Dog Collar is visible up to 1000 feet in the dark, so you can feel safe whether youre out for an evening walk around the neighborhood or playing a late night game of fetch in the campground. With a 100,000 hour LED life and weather-resistant battery housing, the Nite Ize Nite Dawg LED Light-Up Dog Collar ensures safety and durability. The Nite Dawg LED Light-Up Dog Collar is available in three sizes according to neck size: Small 10 to 13in, medium 13 to 18in, large 18 to 27in.