The material is unbelievably soft! I was worried about the one size fits all, but these leggings are made of a soft, stretchy material that fits well in all the right places. (Just for reference, I am 55, 125 lbs, and I ordered the grey, sz 0-12). The waist band goes a little high, so I folded it over once with no issues, since I don't like it when material goes over my belly button. Great buy, and I will be ordering more in different colors.