This is our Garmin Astro DC40 Replacement Strap with a pattern design. They are made out of a second run poly-coated nylon material and come in 1″ wide by 25″ long. The material creates an affordable and ideal solution for common and hunting demands. This collar comes in various different colors that would compliment great on any dog. The material makes a great dog collar because it is easy to clean and wash off. It does not hold smells. The holes are custom to Outdoor Dog Supply by the tight hole spacing making it comfortable for dogs necks. The holes are pre-drilled to fit the Garmin DC40 collars. The buckle is nickel coated metal.