**Safe Material:**this poop bag dispenser is made of wheat straw fiber + pp composite, it is a safe material extracted from the straw of wheat, which is relatively brittle in nature, so please be careful to avoid bumping when using it.**Lightweight and compact:**weighs as light as 60g, this dog bag holder can be tied to all kinds of dog collars, dog leashes, dog harnesses, and other pet products or accessories for hands-free dog walking and easy dog poop pickup.**Balanced and Threaded Design:**with a built-in shaft frame for balanced force, it is easy to take the bags out for the smooth operation.With threaded fastening at the bone-shaped cap, can be closed tight and firm, not easy to lose.Measurement In CM Length Width ONE SIZE 8 4.5