This pattern is for knitting a wool soaker, shorties, or longies. It can be completely customized to your child, and you can use any yarn you like. The pattern is emailed to you immediately after paying for it.
I love this pattern and thought it was very much worth the $15 price tag. I expect to use it many times. The pattern teaches some nice skills for getting a great fit for your dc. May be tough for a newbie knitter, since it required some skills.