My husband loves these socks. It's hard to find socks that actually come down to the knee. They usually stop an inch or two from the knee and slide down the calf during the day. He's 6'1, wears size 12 shoes, and these socks only fit where he wants, up to the squat. The entire foot area and just above the ankle feels twice as thick. This will help keep my husband's feet in boots. He's only had them for a few weeks so I can't say how long they will last, but they seem to be well made. I just wish the price was a little lower.