Country Brook Design | Nylon Deluxe Traditional Collar Collar fits 21in - 26in 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. 256-974-0701 Pitbull,German Shepherd,Golden Retriever,English Bulldog,American Bulldog,Collie,Doberman,Chesapeake,Labrador,Shepherds,Boxer,Terrier,Basset,Retriever Made in U.S.A. with top quality hardware Six laser-cut holes for growing dogs