The Nite Ize Nite Dawg LED Light-Up Dog Collar is the answer to every night-loving dog ownerís problem: losing sight of their best buddy after sundown. Made of high quality nylon, this lightweight, durable collar houses a flexible, light-transmitting polymer core that illuminates when the collar is turned on. A reflective stripe adds additional safety by providing passive reflectivity. Powered by a super-efficient (100,000 hour) LED, itís literally a brilliant way to keep your dog safely visible-to you, to other people, to cars-during any late-day or early morning outing. Available in orange and three sizes, the Nite Dawg collar has two mode settings, flash and steady red glow. Fully weather-resistant, visible up to 1000 feet in the dark, and powered by a long-life, easily replaceable battery (included), itís simply the best way to keep your dogís presence clear and obvious, from dusk till dawn.