These leggings feel like second skin. I have just moved into a humid area for the first time and got the leggings because walking around in damp jeans is laborious. They seem to run a little big, I am 5'8 and 180 pounds and the extra large is almost too big for me which is unusual. I love the waist, it doesn't dig in or give me a muffin top and it stays up just fine. The legs are nice and long and actually say over my heals for the first few minutes I have them on which is nice because it's so common for things to be to short at my height.
  These are the lighter version for summer, I can tell that it wouldn't keep me warm in the winter.  I am definitely ordering the warmer version of these leggings ASAP. They also aren't very forgiving when it comes to showing celulite but since I plan on always wearing long shirts with them it won't be a big deal.

 I would highly recommend these leggings for casual and sports use. If you want them to be tight I would consider ordering a size smaller than your usual.