- Leather: The outer layer of the adjustable dog collar is made of cowhide leather, which is durable and wear-resistant, with smooth surface and classic style. A great choice for daily pet walks and outdoor training. 2. Soft Lining: The dog collar is lined with padded scuba fabric, which is softer than other traditional collars and has a delicate touch, which makes the collar cushion on the pet’s neck and protect the pet against crushing. 3. Durable Alloy Accessories: The leather dog collar uses a special zinc alloy as the buckle and D-ring material, which is wear-resistant and rust-resistant, making the collar strong and durable for long term use. 4. ADJUSTABLE BUCKLE: The puppy collar is easy to put on and take off. There are 5 holes to adjust to a comfortable size. D-rings are easy to match with ID cards or belts.