Second belly strap is super close to his *. All areas of contact are adjustable. Second strap lands geographically across my boys.
Small won't fit a jack russel. The back strap is inconvenient.
Bought xsmall for my 4lb chihuahua rat terrier mix. It's adjustable and not at all tight near the neck for when she pulls.
The harness fastens itself via a velcro strap around the abdomen and also has a buckle fastener higher up. I love that the velcro is not under the buckle. It is easy to get it on, buckled & velcro.
This harness solves that issue and is super easy to figure out. It's made so well,. Pretty harness. This harness is a blessing! For the smallest of dogs that still love to get out there and walk!
This was the first harness that fit him when he was much smaller; now the xs still fits him at seven pounds. It fits my 4. Xs. I am glad this fit, for i missed that it was not adjustable.
My dog always wears xxs in other brands but these were too small and fit like xxxs. They were also too small to fit in his mouth.