I bought these for my 6 year old daughter who normally wears 6x7 baby clothes. A lot of other reviews said they run small and suggested going up a size, so I went with a size 7-9 yr just to be on the safe side. Pros: They're fairly soft and thick and feel like they're going to be quite warm. Cons: Accidental tight buttocks/crotch raises/amplification...why is that on baby clothes? Also, I believe they sent us the wrong size because the leggings that arrived were literally the same size as my child. I showed them to myself and the family agreed that the resulting leggings would fit a grown woman. Challenge accepted - I'm 5'5 and 130# and although they made adjustments to prevent the crotch area from sagging, they fit me. So it's safe to say this pair will be returned.