Make your dog stylish by day and visible by night with Petmate's® Green Grid Glow in the Dark Dog Collars. These self-sustaining, glow in the dark dog collars charge under any light source by simply leaving them under a bright light for at least 15 minutes. During the day, the edgy green and blue grid pattern keeps your dog's style on trend. At night, the grid pattern glows, making your dog visible during evening walks or in dark rooms of your home. Designed with your dog's comfort in mind, Petmate Glow in the Dark Dog Collars are made from a soft rubber material that's odor-resistant and easy to clean. For a comfortable fit, each color adjust in length to fit comfortably around your dog's neck. Illiminate the night sky with Petmate's Green Grid Glow in the Dark Dog Collar.