Use a measuring tape to measure around the neck where the collar would sit. Insert 2 fingers for a comfortable fit. This measurement is your dogs neck size. For example, if your dog's neck measures 16'', then you will order a neck size of 16''.
Your dogs neck size will be the length of the collar from the start of the buckle to the middle hole. We will place 2 holes on either side for a total of 5 holes allowing for a precise and comfortable fit.