I am a woman with size 10 feet so I took a gamble these socks would fit. I have oxfords that rub the back of my heel and my regular liner socks don't come up high enough to help. These socks are perfect! They're very comfy, they fit me, and they're invisible inside my shoes except for the tab (which I want to stick out). The only reason they don't get 5 stars is because the elastic is actually a little tight on the top of my foot and I feel that would get old at the end of the day. I am glad I found these.