Walk-Nice Harness Closeup of Center Front Leash Attachment
Cindy makes custom fit harnesses, she also makes matching leashes and break away collars.
I know with a puppy she either makes one adjustment or something like that however you will have to speak with her, she has some beautiful fabric to choose from and the harness is very light weight due to being made from silk.
Its very easy on and off and will be comfortable for your puppy.
I never kept it on through out the night just incase it got caught on something in her pen, but it was simple to put on and off.