Hunter Boston Celtics Pet Combo Set (Collar, Lead, ID Tag) Made with high tensile nylon webbing Decorated in full color with your favorite sports team Collars are adjustable and feature a quick release buckle Collars and leads come in three widths; Extra Small to Small (5/8"), Medium (3/4"), Large to Extra Large (1") Leads are compromised with a sturdy nickel-plated snap hook for ease of attachment to collar