Now with wool on wool (WOW) technology for greater durability, the all-purpose SmartWool Light Hiking Socks let you rack up the miles on your feet. . Made from itch-free Merino wool, treated to wick moisture. Designed for three-season hiking and backpacking. Flat knit for less bulk and better ventilation. Cushions against shock, blisters and abrasions. Wool-on-wool construction in the heel maximizes the lifespan of the sock. Smartwool Merino fibers are naturally odor free. Smartwool fibers regulate body temperature to keep you warm in the winter and cool in the summer. 605284002728 27040500043 SW0SW129