Hunter University of Michigan 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