Elive LED adjustable dog collars are safe and stylish' after sundown! safety starts with visibility. Vibrant LED's will insure your dog is seen. Led's alert oncoming cars and people that your dog is there. Elive LED collars come in 4 sizes and are adjustable to fit just about any dog. The collars are available in 6 stylish colors and matching 6 foot LED leashes are available and sold separately. Each collar comes with a built-in 1 hour timer to extend battery life.