AOLOVE Mushrooms Rivet Studded Adjustable Buckle PU Leather Pet Collars for Medium Large Dogs Small size: 1.4"*16.5"(3.5cm*42cm), Neck 12.5-15.0"(32-39cm) / Please check the pet's neck 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