There is no way for me to express the awesomeness of these socks. Seriously. I bought these for two purposes; one, for my shorter work shoes that need a layer between my foot and the shoe. I'm a foot sweater (gross, I know but hey! At least they don't smell!) and I struggle to find just the right sock that isn't too thick to be too hot and too thin to be useless. This. Is. It. The second purpose of these socks is for my tennis shoes that require 'no show' socks. they work just as amazingly well for that as well.  On to fit...I have the worlds smallest feet. ok, not really but they are a 5 and no socks ever fits just right. I usually end up with a ton of extra fabric that needs tucked somewhere or, I opt for kid socks that won't bunch but then they are so tight that my toes hurt at the end of the day. Not these babies! Somehow, magically, they are perfect. They have  a ton of stretch but don't move (must be magic) and they stay in place without being too tight. I love these and will wear them forever. I just ordered more :) OH-and the price is phenomenal for what you get AND they have the best customer service ever.