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.
It looks good on my dog and it fits comfortably. My only complaint is the harness doesn't quite fit as large as the range it gives. Would deffinetly recommend this brand of harness.
Harness is very sturdy and has reflective strips for night time walks. The reflective ribbons really glow. The handle on the top allows us to provide on the spot support for our dog.
It's easy to adjust to his proportions. It fits him and he seems to strut when he's wearing it. Because of this he wears the harness all day long.
It's too tight on the loosest setting. Buckles are plastic, not metal. The loops for the leash are smaller than pictured.