Dog Safety Light PupLight provides so much light with it's 3 ultra bright white LEDs you can see yards ahead of the dog when walking on leash The light is adjustable and has a rim on top so it doesn't shine in to your dogs or anyone else's eyes It's the only dog light that uses AAA batteries so it's much less expensive to use over time when compared to other lighted dog products The super bright light helps dogs see better. (Dogs 10 years or with cataracts can't see well in the dark any more and they, in particular, like PupLight.) Material Nylon, Electronic