I can't count the number of times I've bought this kind of sock, only to be disappointed with them because they all slipped down on the heel. I was a little leery of trying yet another brand but, because of the high cotton content, I decided to take the risk, and I'm glad I did.These socks fit my small foot, and finally, I've found some that don't slide down my heel. I like the fact that they're 97% cotton, so they're very breathable, and they fit comfortably. I recommend these, and plan to buy more colors.