AOLOVE 3 Rows Mushrooms Rivet Studded PU Leather Pet Collars for Cats Puppy Small Medium Dogs Medium size:1.0"*14.5"(2.5cm*37cm),Neck 10.5-13"(27-33cm) / Please check the size before you confirm the order Material:PU Leather+Alloy 5 adjustment holes for adjustment Strong and durable high quality PU (Faux) leather,Nickel-plated hardware and heavy duty D-ring to help protect its neck Fashionable and personalized designed for your pet