These Postal Lightweight Black Crew Socks from Wigwam, are great if you are on your feet all day.
They have the following features:
Patented Ultimax moisture repelling fibers in the foot and moisture transfer fibers in the instep and leg, which moves moisture from the foot bottom to the leg of the sock to evaporate more efficiently, keeping feet dry and blister free.
Made with X2O Acrylic which is an advanced moisture-absorbing acrylic fiber containing micropores that have a capillary capacity to absorb moisture, and then dissipate it by evaporation. It is one of the only moisture-absorbing acrylic fibers that has anti-bacterial and anti-mold characteristics.