These Heavyweight all weather Crew socks are made with acrylic fibers that are proven to keep this sock soft on your feet, while nylon keeps its shape to resist wear and tear. Our exclusive wick dry technology keeps your feet dry and unique cushioning helps keep your feet happy! proudly made in the USA, these white athletic Crew socks include Heavyweight knit construction that adds durability and strength, along with a fully cushioned sole and toe to absorb shocks and add comfort while you compete at your Sport.