AOLOVE Mushrooms Spiked Rivet Studded Adjustable Pu Leather Pet Collars for Cats Puppy Dogs Please check the pet's exact neck size before you confirm the order / Large size: 1.0"*16.5"(2.5cm*42cm), Neck 12-14.5"(31-37cm) 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