i have this one from petsmart and i really like it because it doesnt slide all over the place everytime he moves. It has a nice ring that follows him rather then the whole harness. It is adjustable and it has great customer reviews. Also i like it because if there were ever a dog wanting to attack him I could pick him up by it and he wouldn't be hurt or uncomfortable, I always joke that I could go rock climbing with him in this harness
here's the link.
Lil' Paw™ Suede Sport Harness - Harnesses - Collars, Leads & Tags - PetSmart