I read the reviews on these leggings and they are exactly what the descriptions indicate.  They are a thick material which I love, they run small. I am glad I ordered a large and I am 5'1 128 lbs. Don't think medium would have worked.  Also the length for someone short is perfect. Sorry if you are tall, these are not for you.  What I do not like is how low they sit on my hips. When I sit down and bend forward, too much shows.  The ultra low rise forces a muffin top that I do not typically have in other jeans, pants, or leggings.