- Durable material. The large dog collar is made of high quality durable nylon with neat stitching and a soft padded lining to avoid chafing your dog’s skin and hair for a comfortable fit. 2. Double pin buckle design. This sturdy dog collar features a metal double prong buckle with 5 adjustable points so you can adjust the length to your needs. This k9 collar tactical bungee can store the additional fitted belt. So your dog can’t rip it off. 3. D-ring and Velcro ID panel and adjustable dog collar buckle. The German Shepherd collar has a D-ring for attaching a dog leash to make it easier for your dog to be around you. This metal buckle dog collar has a Velcro ID panel for patches. 4. Simplified design. Not much happens with the entire collar, and it’s comfortable to have the dog laying flat with no handles, bumps, spikes, etc. that obstruct or interfere with his sleep. Please measure your dog carefully according to the size chart before placing an order to ensure the flat dog collar