Use a flexible tape measure to measure the circumference of your dogs neck where the collar will be worn. Please ensure you are able to fit two fingers between the collar and your dogs neck to provide the most comfortable and secure fit. The collar should not be too tight or too loose.
Measuring The Length Of Your Dog
Measure from the base of the neck (where the collar sits) to the base of the tail along your dogs backbone.
Measuring Your Dogs Chest Size
Measure right around the deepest part of your dogs chest, usually just behind the front legs.