These diapers run at least a size small. I like the idea of bamboo-based diapers but the straps barely stayed attached (the velcro-like straps didn't stick well to the texture of the thick-paper-towel texture of the outside of the diaper). The leg room was very narrow even for a child in the 20th percentile for weight and height. My son tried a size 5 and it fit like a size 4. He did happen to size up to a size 6 in other brands of diapers shortly after which could've contributed to our experience as well. From other reviews I've read after posting to another site about my experience other moms have the same problem and thoughts... I'd like to see expanded sizing because I'm sure lots of toddler moms would love to have their child wear EcoPeaCo diapers or training pants.
