These pants are one size fits all. That being said I will say that I am 5'4" and 110 pounds. Very fit for my age at 53. I cannot stand pants that ride up, or create a "bulge" where one did not exist before I put them on. No panty lines, no ride up, stretch to fit you perfectly. Give one pair a try and throw the rest of your undies away when you get more ....like me.