I am a women's size 4-6; but got a large for fear of them being too small. They're a tiny bit long (I'm 5'5"), but I wouldn't return them. The hilarious part is where the crotch seam is, two tabby cats are sewn together and the fur looks well. Suspicious; lol. But they're awesome! Sometimes leggings fails are hilarious- and I'm keeping these. They're amazing! Thick and warm for my Wisconsin weather- they're great. Keepers for sure.