Measure your dog’s neck directly under the chin and up around the back of the ears. Location on the neck should be above where your pet’s regular buckle collar sits. Measure for a snug but not tight fit. When the collar is on the dog, you should be able to insert your little finger between a prong and the skin.

Need a little help with a tape measure?  Click on the link for a printable tape measure that you can cut and fold around your dog's neck so you can have a more accurate fitting for your prong collar.  Remember, you need to have a snug fit with room for a finger or two to insert for the training collar to work effectively for you.  

Fitting Chst