Build the pair.
Harness and leash, together.
Tell us three things about your dog and the whole range re-sorts around them. Nothing gets hidden — the best matches just come first.
Measuring the chest
Run a soft tape around the deepest part of the chest, just behind the front legs, and keep it snug but not tight — two fingers should slide under. That number is the girth every Tre Ponti size is cut to. If your dog sits between two sizes, take the larger one.