SMALL
Neck sizes 30cm - 42cm (suitable for small dogs such as Dachshunds, Chihuahuas.)
MEDIUM
Neck sizes 34cm - 47cm (suitable for medium dogs such as Cocker Spaniels and Kelpies)
LARGE
Neck sizes 43cm to 64cm (suitable for large dogs such as Golden Retrievers, Labradors, Australian Bulldogs.)