Our Worldwide Cyclery socks were custom made by our friends over at Memory Pilot. These super comfortable socks are made from 97% Nylon & 3& Spandex. The 8" cuff has some light compression and verticle ribs along the back to help support your achilies while keeping the sock from sliding down. and help the These socks start at an 8" cuff but do settle down after a few washed to the perfect height. We got them made for Worldwide Cyclery as we love wearing them, and you will too.Features:Superior wicking abilityYear round performance8" cuff heightFits US Shoe 8-13Ability to climb and descend 10x faster :) Worldwide Cyclery Crew Sock