We have 3 sizes to choose from, Medium Large dog collar length can be adjustable.
Medium size:(length: 36-45CM, width:2.5CM)
Large size:(length: 45-53CM, width:2.5CM)
X-Large size:(length: 53-62CM, width:2.5cm)
Measure your dog's neck before purchase, using a soft measuring tape or piece of string.Make sure buy right size dog collar.