Darn Tough Men's Merino Wool 1/4 Sock Light. This is a great 1/4 sock for runners and cyclists looking for a dialed-in precise fit. True Seamless construction reduces hot spots and blisters. Ultra high stitch count creates a super comfortable sock with a streamlined fit like no other. No slipping, no bunching, no blisters. Fine gauge Merino Wool makes this a fast drying and breathable "all weather" sock that stays cool in the summer and warm in the winter. And since Merino Wool is naturally antimicrobial, this sock repels bacteria and odor. 51% Merino Wool, 45% Nylon, 4% Lycra(R) Spandex