The Darn Tough Style 1973 Men’s Kelso Hike/Trek Micro Crew is a micro-crew-height merino wool sock knit with cushion under the foot and a lighter profile through the upper. Micro crew height sits just above the ankle — out of the way of most hiking boot collars but with enough coverage to prevent boot bite on the ankle bone. True Seamless toe construction removes the toe seam.
The Gray colorway the universal mid-tone gray — disappears inside almost any shoe. The merino wool blend wicks sweat, regulates temperature across changing trail conditions, and holds its shape through repeated wear — the reason this pair handles day hikes, trekking, and multi-day trips without becoming a single-use item. Cushion is placed underfoot where it absorbs impact, kept minimal elsewhere to keep the sock compact inside the boot.
Darn Tough is family-owned and knits every pair at their mill in Northfield, Vermont. Lifetime guarantee is unconditional on every pair.






