Size: 23-25cm Weight: 20g/pair 1.70% Cotton, 30% Spandex/Nylon and Elastic Yarn 2.Good airing, moisture picking-up 3.Rich cotton knit comforts your skin 4.High stretch Spandex/Nylon resist wear and tear 5.Better in performance, amplexation after adding the Spandex elastic fiber in the socks, good holding for all feet