Harness that won't damage fur??

[Lysette85]

So, Little Bear and Claussen both have rolled leather martingales. Claussen's rough and fur under his neck are flawless as far as. Of being able to tell he's vet had a collar on (they only wear them when we go out). Little Bear on the other hand, has the silkier coat but his fur on his throat looks like it's broken right off and maybe even has split ends. I want to get something that will stay well below the throat to see if it makes a difference and really was the collar being the problem. I've considered a "face harness" but he heels so well I don't want to make his walk unpleasant. Any suggestions for a harness that is bare minimum contact (not under elbows) preferably not nylon as to prevent matting or broken fur?