Material: The wear resistant bungee dog leash is made of durable nylon.This dog leash with bungee is durable and lightweight. made by high quality and durable nylon material, metal buckle. Suitable for dog training or daily life. This rope is a nice choice for all kinds of dogs. Elastic Bands Provide Ductility: The elastic dog leash has elastic stretch, the elasticity cushion keeps your arm or your dog's body from getting yanked when your dog change direction or forward suddenly, enough stretch will reduce the risk of injury and increases comfort.Giving enough freedom to your dog, perfect for walking training and running. Metal Hook: The metal hook of this tactical training leash can be attached to a dog vest or collar, it can withstand up to high tensile after testing.