How To Measure for Our Collars
If you choose the Martingale Chain or O-Ring Hardware, then you will need to measure around the widest part of your dog's head. This is typically right where the ears set. The measuring tape should be snug and making contact all the way around. That measurement will be the size you choose in the listing.
If you choose the Clasp Hardware for your collar, you will need to measure around the middle part of the neck. An additional option is to use a current collar and measure the inside circumference. Make sure to close/buckle the collar and then measure the entire inside. This measurement will be the size you choose in the listing.