A long flight is a compression problem. Sockwell lists the Men’s Elevation as firm 20-30 mmHg graduated compression at $32.95.
The content line on the page is 31% merino wool, 31% bamboo rayon, 30% stretch nylon, 8% spandex, with an ultra light cushion sole.
Shortlist reason: a printed mmHg number, which is the fact that matters in a compression sock.