Polypropylene webbing collars are used to guide dogs on a daily basis, for K9 operations, or when learning to defend themselves. They were designed for large, strong German Shepherd or Belgian Shepherd dogs. Their biggest advantage is their simple design, durability, and speed of fastening and unfastening. In some models we use a Cobra buckle. They were handmade from high-quality polypropylene tape and used strong fittings. We guarantee the durability of the collar.