I bought the black leggings with the matching top and I love them! The fabric has a good stretch and is comfy. The material isn't thick but it isn't super thin to where you are worried about your butt showing while squatting or something. I actually wore the set all day before attending an evening Pilates class and was perfectly comfortable! Washes well (cold water, delicate, kept in a lingerie bag, let it hang dry). I purchased an XS and I typically wear a Lululemon 4, and a 0 in regular clothing. I will note these did not feel like they had as much stretch as other brands XS, so if you are a 2 in regular clothing or are concerned about the leggings being too tight, I'd size up. The top of the pants did have a tendency to roll down a bit during certain moves on the reformer/my pilates class in general, which is why I gave it a 4 and not a 5 (of course, it also could be because I'm right under 52). That said, had I not been wearing the matching crop top, it probably wouldn't have bothered me as much, but wanted to point that out.