When I decided to learn how to knit toe-up socks, I knew I was going to need to figure out how to knit a sock cuff that was stretchy but still stayed up. I experimented with lots of different stretchy knit bind-offs. I tried the elastic bind-off, Elizabeth Zimmerma's sewn bind-off, a tubular bind-off, and more. Here's my favorite stretchy bind-off for toe-up socks, plus a good alternative.