Material: Selected polypropylene and high quality leather design, soft and comfortable, effectively protect the dog’s neck. Soft touch nylon dog collar: durable nylon webbing with high resistance to traction, perfect for training, running, walking. Metal Buckle: Made of strong and durable chrome plated zinc alloy, the large size (5 adjustable points) is easy to install.< /p> Dog collar diameter: large collar (39-51 cm), width: 3 cm, colour: black. PLEASE NOTE: Collars are not meant to be tied down, never leave your dog unattended with a collar on.