New Balance Trail Crew Socks (1 Pair) 33% Wool, 33% Acrylic, 20% Nylon, 13% Cupron Polyester, 1% Lycra Spandex Made in US NB DRY moisture management technology quickly moves sweat to keep feet cool and dry. Stability Fit built in for enhanced arch support Strategic cushioning around heel and toe helps with shock absorption. Reinforced heel and toe for added durability. Breathable mesh panels promote airflow to keep feet feeling dry and cool. Reinforced heel and toe for extra durability and protection