The BlazingPaws Darlington Luxury 2" wide leather collar is designed for large dogs. A wide design helps protect your dog's neck from animal attacks. Made with thick natural color leather with a dark brown leather accent in the front and diamond stitch pattern. This studded design has green crystals, which are buried under the brown leather to provide a formal look. The inside is padded with brown suede leather to provide a comfortable soft feel for your beloved canine companion. The brass buckles and ring have a nickel finish. The collar is thick and designed to be strong. This collar is available in Medium, Large, XL and XXL sizes. Please use the 'Darlington' size chart image to check accurate sizing details. Please measure a comfortable tight fit around your dog's neck with a measuring tape to ensure you are ordering the correct size. Medium size: Will fit puppies of large breeds under 4 months old, and some medium size adult breeds such as labradoodles, golden doodles, beagle etc.Large & XL sizes: Labs, Dobermans, Pitbulls, Rottweilers, German Shepherds, Huskys etc. It is strongly recommended that you measure the exact neck size with a measuring tape for your specific furry family member.XXL size: Designed for very large breeds such as St. Bernard or Great Dane.NOT fit for: chihuahua, dachshund, maltese, yorkie or similar small breed.