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The Farm To Feet Permethrin Lightweight Hiker is the traditional Boulder sock with an added boost of No Fly Zone technology. This unisex sock is pre-treated with NFZ, a permethrin-based technology that will help repel insects through your clothes. The outer nylon plaiting provides increased durability. The bottom of foot cushion zone provides shock absorption without unnecessary bulk. It is made of 40% Merino Wool, 40% Recycled Polyester, 19% Nylon, and 1% Spandex. Medium fits about a women's shoe size 7 to 9.5 and large is men's size 9 to 11.5.
