I have small feet, 5.5 womens. Regular socks, 7 to 9 are way too big for me (you know, heals sticking out the back of my shoes ). These do fit my feet.  What they don't do is cover the top of my foot.  So, if you want these for lower cut shoes, these could be great.  But they don't protect from sneaker laces rubbing, or Crocs sticking to, the top of my foot.  Ill use them indoors.