Darn Tough Mountaineering Over the Calf Size:M (8-9.5) paired with a Bilight midsole

paired with a Bilight midsole

Field of view

Pupil distance (in/mm)

No more swampy feet in sloppy fitting boots

Darn Tough Mountaineering Over the Calf Size:M (8-9.5) paired with a Bilight midsoleIf youre out there in the cold, you need the Mountaineering sock. Ofering the same Streamlined performance fit as it's Micro Crew brethen, but with greater lower leg insulation and protection. Chock full of Merino Wool warmth. These socks keep you moving up when the rigors of the trail get you down. After all, a lifetime warranty on a sock says a whole lot, and knowing that you can expect years of everyday wear is a pretty serious bonus.