Starting point

Measured from the buckle to the first/smallest hole or from the buckle to the largest/last hole.

XXS

Length: 22cm–26cm  Width: 1.7cm, 3 holes
Pomeranian, Chihuahua, Havanese, Yorkshire Terrier...

XS

Length: 25cm-32cm Width: 1.7cm, 4 holes
Dachshund, Maltese...

S

Length: 31cm-38cm Width: 2cm, 4 holes
Pug, French Bulldog, Beagle...

M

Length: 38cm-44cm Width: 2.5cm, 4 holes
Welsh Corgi, Cocker Spaniel, Schnauzer, Fox Terrier...

L

Length: 43cm-51cm Width: 3cm, 5 holes
Weimaraner, Boxer, Dalmatian, Golden Retriever, Continental Bulldog...

XL

Length: 50cm-49cm Width: 3.5cm, 5 holes
Rottweiler, Rhodesian Ridgeback, Saint Bernard, Shepherd dog

Leash Size

Collar Size XXS-S: Leash Width: 1.5cm, Length: 130cm
Collar Size M-XL: Leash Width: 2.5cm, Length: 130cm