so, i bought this color in M because the S was sold out by the time i got to them, and than i got the black ones in small. and let me tell you, these leggings are majic, because i dont know how the hell both small and medium fit me PERFECTLY i mean like a glove and they are comfy. they dont feel like u cannot move on them and the waist band or whatever its called is actually comfortable as well, like u can actually breathe even though it hugs your waist tightly! i definitely was prepared for eother small or medium not to fit me and as i put medium on i was like oh the small wont fit me than since these fit so well, and than i put the small on and they fit just as well, i mean like they were made for me, im confused how but very plesantly surprised lol. Anyways, GET THEM!!!