Canine Couture Collection's collars come in a variety of sizes and in two widths: Narrow: 5/8 inch and Wide: 1 inch. Collars are made from high-tensile strength nylon webbing with sewn on polyester/nylon ribbons. Ribbons are stain and fray resistant. All collar hardware is cast, not welded, solid brass. Quick-Release Buckles are Coast Guard approved for high weight hold.