I really like these! I have bought many onesies, many costing $20+ a piece for organic or "fancy" fabrics, and these are as good as those really pricey ones. I think the newborn size is perfect if you have average-sized babies (5-8 lbs), for babies bigger you would probably want to go 0-3. I wish I could find them on Amazon in more colors, because 4 onesies for 10 bucks is a deal, organic or not.