The thickness and quality of fabric is much better than most other leggings I have. I ordered b/c they have pockets which are so handy! They feel like they will last longer than most. I just wore them to the gym today and they felt great. I will say that if you are between sizes, go up a size.... I weigh 95 lbs and wear an XS in pretty much everything, but I don't like my leggings to look like I am poured into them. So I ordered size S and knew that in going up a size I would need to think about the lenght, so I ordered size Small Petite. The length is perfect. The leggings fit snug. That is how they are supposed to fit, but I could NOT have worn a size SX!!! I also noticed them being tight at the ankles which was no problem for me, but just keep that in mind. So if in doubt, size up. I think you will love the quality. I just came here to order a second pair but they are sold out in my size in the color I wanted so I will keep watching.