Adjustable PU Leather Mushrooms Spiked Rivet Studded Dog Collar for Small Medium Large Pets Cats Puppy Dogs. Macho attitude collar studs not spikes, Wide middle with tapered ends. This premium studded collar combines bold style with practical comfort for dogs and cats of all sizes. The durable PU leather construction resists wear and tear from daily adventures, while the distinctive mushroom-shaped rivets add personality without sharp edges. The ergonomic design features a wider center panel that tapers smoothly at the edges, distributing pressure evenly around your pet's neck for all-day wearability. Easy-to-adjust sizing ensures a perfect fit as your puppy grows or for quick length modifications. Whether your furry friend has a tough-guy aesthetic or just loves turning heads at the dog park, this studded collar delivers attitude with comfort and safety in mind.