High density cushioning surrounds the entire foot and shinCustom shrink treated Merino woolRibbing above the ankle insures a proper fitReinforced heel and toeElastic support around the archRing toe construction for a comfortable invisible seamContents: 69% Merino Wool, 27% Nylon, 4% Lycra(R) SpandexGuaranteed for LifeMade in Vermont, USA | Darn Tough Socks Full Cushion Boots Socks in Black | Size Medium