Ichi Bike wool socks! Each sock says Ichi Bike above the ankle. Made by Sock Guy in the USA out of Turbowool, a high performance blend of deluxe Merino wool and polypropylene that keeps your feet warmer in the winter and cooler in the summer. Turbowool has 5 times the strength and durability of merino wool alone and provides an itch-free, ultra-wicking sock for all weather conditions. 
 
Available in two sizes, S/M for men size 5-9 and women size 6-10, and L/XL for men size 9-13 and women size 10-14.