PawsMark Dog waste bags are thick, strong, and 100% leak and tear proof. This set includes 19 refill rolls of colored doggy bags, plus a cute bone shaped dispenser with a carabiner clip for attaching to your dog's leash. Each roll contains 20 eco-friendly, biodegradable plastic bags. The bags are perfectly sized to contain waste material and keep your hands clean. Perforated markings make it easy to quickly tear off a single bag, so you can have it handy when needed.