First off let me say that I am a giant fan of seventh generation diapers!! I have used them up to size 6 on all 3 of my kids.
My toddler who is 2 1/2 and normal size for his age started getting too active for the size 6 so I ordered these thinking I would love their pull ups. I was so disappointed when I used them. My sons hiney is average and these gave him a wedgie with every single wear. When he went number 2 in the pull-up his poop got on whatever pants/pjs he was wearing every time. If your child is almost fully potty trained these might work, but they are just SO skinny in the back. I would hands down buy these if they would make the back side wider but they do not work for us at all.