Drymax Hyper-Thin Mini-Crew Running Socks, 2-Pack 65% Drymax/Olefin, 20% Polyester. 8% Nylon, 7% Elastaine Lightest running socks on the market that keeps your feet dry while training 73% Drymax Olefin / 11% Polyester / 11% Nylon / 5% Spandex Dual layer sweat removal system Flat toe seam & Y Heel & 3D Advanced Fit MicroZap Drymax antimicrobial fibers