Neck 12"-15", Width 3/4"; 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. The collar is not for tie out. NEVER leave your dog unattended with a collar on. This is not a typical 'all-leather' collar. It is made with a combination of polyester webbing and high quality genuine leather to offer unique features. The polyester webbing provides supreme flexibility and comfort for your pups. The leather is mainly constructed in the buckle area for durability and luxurious style. The metal buckle is coated with eco-friendly brass color Usage of natural leather might result in color variations, slight scratches, and/or discoloration marks. We strive to produce products with consistency. However, due to inherent characteristics of leather, certain level of listed issues is inevitable Care: Do not wash, wipe to clean; Do not bleach; Do not dry clean; Do not iron Pet owner supervision is suggested. All pictures are taken with our production samples from a size of Medium; Please measure your pets carefully for making the right purchase. Always look at the size chart to confirm the size