1.【4 SIZE OPTIONS】There are four adjustable sizes to choose from and choose three different widths (0.6", 0.8" and 1" wide) for your dog. The collar will not stretch by itself , be sure to leave only 2 fingers between the collar and the dog’s neck.A proper collar and harness will leave no room for your dog to chew. 2. 【Quick Release Metal Buckle】: Release immediately the collar to protect your pet.the clasp is made of zinc alloy.The D-rings are welded for high strength and durability. 3.【Place to put your dog tag】We provide you with a small buckle integrated next to the buckle. 4【Handmade Dog Collars】Handmade leather dog collars and puppy collars are a combination of fashion, high quality and comfort. leather for adult dogs and puppies are comfortable, flexible, lightweight and stylish. l quality is used to make these genuine leather collars Dog Collars Multiple sizes allow you to choose the most suitable collar for small, medium and large dogs.