Size XS - Neck 7.87-11.8"(20-30 CM), Width 5/8"(1.5 CM); The collar does not stretch itself, please make sure leave ONLY 2 fingers between collar and dog neck. A properly fitting collar and harness won't leave any room for your dog to chew. Unique, vivid, and stylish patterns designed with your dog’s comfort and style in mind, From teacups to giant breeds, boy dogs or girl dogs, we have a special collar pattern that will show your pet’s unique personality Made of premium polyester, which imparts softness and durability to the product. The buckles are made of eco-friendly plastic. Made with silver metal D-ring to add durability.