I'm not a schoolgirl and I didn't buy them for my uniform. I'm a petite woman who hates the way seam socks feel in my shoes and I have a hard time finding socks that aren't huge on my tiny feet. I bought a very big one. They are too big (I wear 5.5 shoes). The heel reaches to my ankle. It's my fault, I should have tried a bigger one. The fabric is not bulky, the elastic upper keeps its shape well. BUT I wanted a seamless sock. It's a finger prick. It's minimal, but it's there and I can feel it.