It certainly runs large - I got an XS and it fits like most of my size small fabletics leggings, and the waist is not as snug as I would have expected. It's a thinner material with a little more give. Maybe don't do squats in this (hello undies) but I appreciate the little pockets for stowing small items when I run. Very comfortable, smooth material. I got this back during a 2 for $30 deal and am pleased with the value at that price point.
Christiana recommended this style