Anybody have advice on a good infant vest? I'll check here locally but will search for one if somebody has any good info. on them!

We have a 8lb - 7week old baby that I want to find a vest for!
I have a vest that is up to 30lbs that my 2.5 year old wore summer of 2008but she was 9 months when we had her in it. Also isn't neoprene so it isn't near as comfy.
I think it's too big for our new baby?