Thanks everyone! I might try one of those, they look really nice.
I'm going to get one when it gets closer to the coming-home date. I figured I'd go measure him at 8 weeks and then get something that fits from there and expands...we're not taking him home officialy at 8 weeks but the breeder is having us bring our pup to spend time with the puppies/pick him out at that time so that we can socialize them. I'd like to have a harness by then.
sorry about the confusion with my previous post. I didn't fully explain myself- he is being placed at that time but not brought away from his mom fully yet.