Crafted from your choice of either  5/8″, 3/4″, or 1″ wide 100% nylon webbing that is machine-washable. Each nylon dog collar has an Acetyl side release closure and comes with a 2′, 3′, 4′, 5′, or 6′ matching leash. The leashes of the same material have a hand loop on one end and metal swivel snap hook collar attachment opposite to eliminate twisting.