The non-slip part of the socks works well.
My husband would prefer these X-Large socks to be longer as he wears an 8 and 1/2 size shoe and the sock is really snug to the heel and then only covers a small area of the ankle.  Also, after one machine wash, some elastic threads started to unravel from the top, so I had to cut the threads off. I have not washed them again yet.  I air dried instead of using the dryer so hopefully they will last longer.  The non-slip part works really well.
Rating: 3 stars