Cooper is 12 pounds, has a 15" chest and wears size 3.5 on the 3rd hole. It's perfect. We originally bought the 4, but it fit on the last hole and I was afraid it would stretch too much and get too big.
Max is 12.5 pounds, has a 14.5" chest and wears a size 3.5 on the 3rd hole as well. They both fit perfectly.
I would imagine that a 3 would be too small for both of my boys. |