Finally, socks that actually fit. I'm a size 6 and the Small fits absolutely perfect. No bunching issues either around the toe and its flat knit toe seams ensure that I don't have any annoying chafing issues while I run. So far I've ran twice in these and they were wicked comfortable. Its TriLayer technology (fancy word for its blend of synthetic materials) wicks moisture away and dries super-quick leaving my feet comfortable throughout my five mile run. There's also slight cushioning on the sole and the instep contains lightweight mesh fabric to ensure your feet don't overheat. The sock is also made really well too!