Farm to Feet Socks Size Chart The lightweight version of the Madison is perfect for hiking and exploring in the warmer months. Just like the original it features advanced hidden plaiting construction, but with lighter and cooler half-density cushioning on the bottom of the foot. The venting channel outside the foot and ankle paired with 100% American merino wool will help keep feet comfortable on any warm weather outdoor trek. Features: - Soft, itch-free Merino wool construction - Naturally quick drying and odor resistant - Helps maintain a constant, comfortable temperature for your feet - Nylon plaiting creates a smooth exterior and low-profile fit - Bottom-of-foot cushion zone absorbs shock across the entire sole. - Fitted instep won't interfere with low-volume shoes - Seamless toe closure prevents chafing and reduces bulk - Comfort compression from the cuff to the arch creates a precise, supportive fit - Reinforced construction and low-stress seam placement reduce wear and tear - 66% US Merino Wool, 31% US Nylon, 3% US LYCRA(R) Spandex - Made in the USA with 100% US-sourced materials