J.H.
A., I have a 21-month-old boy who is 43 lbs. He's just grown out of the size 6 diapers, and though I tried pull-ups, they aren't as absorbent as he needs them to be right now, so I have been buying size 7 online at diapers.com. I get Pampers Cruisers. The prices are okay, and they do free shipping on orders over $49. That's been working for us!