The comfiest leggings ever!  I purchased them to wear with a crop sweatshirt, and the outfit was very comfy/cool like, stylish, but not trying too hard.  I highly recommend these if you want to wear crops, or if you just want a little tuck in the tummy area.  Im 59 & 120 lbs, I ordered a medium (because I wanted to make sure the length of the top part would be tall enough), and I couldve gotten a small.  The size doesnt really matter bcuz the material is stretchy.