Please provide a measurement using a measuring tape on your pup in standing position. 

* Do not use an old measurement or just an existing measurement from other clothes.

Neck: The area where the collar is worn. 
Girth: The widest part of your dog's torso, usually right behind the armpits of the front legs. 
Length: Measure the lower neck till the beginning of the tail. 

Please measure your pup at the time of the purchase. If you have a puppy growing up fast, we recommend you to buy a size larger or you can email us for fitting advice. If the measurement you got is between sizes, email us away and we will advise you for the best fit.