These come in four sizes, small (18-25 lbs), medium (25-30 lbs), large (30-35 lbs), and extra large (35+ lbs). They are great for babies no matter if they have skinny or chunky legs, My baby boy is somewhere in between, he isn't too skinny but not much of a chubster either - about average. Another bonus is that they are just cute, which is a must of course. I really like the neutral white color that's great for a boy or girl. Though I admit the Pistachio Dot print makes me want to have another girl.
The Bummis Potty Training Pants are priced at $15.95 each, which I admit is a little more than I would pay for one pair of potty training pants. Certainly they are not the cheapest, but I think they are worth it. Even if you would get some cheaper undies and training pants and just a few of the Bummis, you'll find yourself saving them for errands and trips when you need something reliable. The price is worth a product you can truly depend on!