I have tried a number of different "invisible" socks and this brand is one of the few that gets it right, even for low shoes and loafers. No more annoying little borders peeking out of your shoes. Plus the silicone patch on the heel helps the sock stay in place all day. Love these.  PS: don't be misled by the word men's in the title, I wear size 9 women's shoes and they fit just fine.