Country Brook Design | Premium Collar & Leash - Dog's Life Collecton Collar fits 16 inch - 22 inch neck. There are no standard sizes for dog collars. Please be sure to measure your dog's neck for correct size. Measure around your dog's neck (with string or tape measure) snugly where you want the collar to lay. If you have any questions or problems with sizes please give us a call before ordering. 256-974-0700 Breed Recommendation: Pitbull, German Shepherd, or Golden Retriever Made in U.S.A. with top quality hardware Features a metal side release buckle with a mirror finish - Collar is size of your choice and leash is 6 feet long