I ordered two versions of these leggings.One was the “cotton seamless” and the other was the “compression seamless”. I ordered both in my normal size (S) but according to the size chart I should have ordered a Medium.The “cotton” ones were so not soft at all, fairly scratchy, super tight, and completely see through. I’m returning those.The “compression” ones are a sleek performance material. Even though I got a size smaller than recommended by the size chart, I honestly think I could even size down again to an XS. I have a 28” waist and 36” hips/glutes. I would not consider these to be compressive, even with sizing down per the size chart. But they are very flattering, have a V seam in the back, and no front seam. The waistband isn’t tapered and doesn’t have a small elastic band at the top. I would call them ~90% squat proof.I will probably order more of the “compression” ones but definitely not the scratchy “cotton” ones.They seemed ok, but smaller than I expected which could be my fault. I got an xs and I'm 5'0 and 117lbs. I gained some weight and am now usually a small but still fit in my xs leggings I have, but not sure if that's just because I stretched them out ?The butt was ridiculously tiny but I could still squeeeeeeze into them.Thick, not too shiny, fit tight. I’m 5’5 125-130lb, size small fit perfect. They do not bunch-up or bag-out in the crotch. Usually will only go with cotton/spandex but these are good.I am 5'7", 125lbs, and typically wear a size small and 33" inseam. I ordered size small "extra long" and the leggings are unwearably tight (can barely get them on) and hit above the calf. This is very confusing because I ordered a size sambal 33" inseam bootcut pant from this company and was pleased. Color is nice (purple/magenta), material seems fine, opacity game is strong, but I advise you size up if you're deciding between sizes.I have purchased other styles from same brand and this one runs big. I am 5'2 , 115 lbs and purchased small 27' . They fall off and are about 5 inches too long.I am returning, getting an XS and 25' .Material is great and very comfortable.Pants were labeled XL. I wear large (size 12), but bought bigger just in case. They came and were still too small.i usually wear large but i ordered a medium, they were really snug but i plan on loosing weight so the medium is motivation lol. i ordered a few pair in large for now, i love this brand!For stirrup pants lovers, these are a MUST. gorgeous fit; fabric soft, stirrup just awesome. Do not hesitate to order these!!!!