Which collar size is right for my dog?
The sizes shown refer to the dog's neck circumference . The collars are infinitely adjustable within the size specifications. For example, you can adjust a collar size M (43-58cm) to a length of 48cm. If you have any questions about the right size, you can contact us at info@bullsland.de at any time! 
To find the optimal size for your dog, proceed as follows: It is best to measure the circumference of your dog's neck in the middle of the neck with a measuring tape. Now add 1-2cm so that the collar doesn't sit too tight.
Example: the measured neck circumference of your dog is 44cm . To ensure that the collar is not too tight, add 1-2cm . The optimal neck circumference in this case is approx. 45cm ➡️ Size S (40-50cm)
If your dog's neck circumference is between two sizes, please choose the smaller size.