Small:  5/8” and 1"  fits neck size 11-15" ex. Tibetan terrier, toy fox terrier, Jack Russell

Medium: 1" fits neck size 12-19"  ex. Beagle, Pug, Viszla

Large: 1" and 1.5” fits neck size15-24"  ex. Labrador, Golden Retriever, Wiemaraner.

X-Large: 1" and 1.5” fits neck size 17-30"  ex. Bull Mastiff, Great Dane, Sheepdog.

Leash: Standard 1" wide and 5 ft long.