Darn Tough Merino Wool Tactical Socks are socks made for military use but worn by everyone.  Tested in extreme conditions.  All Darn Tough Tactical socks have a reinforced heel and toe for increased durability. This sock is a light-weight cushion.  The bottom of the sock has some light cushion while the rest of the sock is thin.  A favorite of hikers who like a thinner sock that still provides some comfort. This sock will peek over the top of a standard boot. All Darn Tough socks are made in the USA and backed by  Darn Tough&##39;s Lifetime Guarantee.  Specs: 49% Nylon 48% Merino Wool 3% Lycra Spandex