Drymax Hyper-Thin No-Show Running Socks, 2-Pack 65% Drymax/Olefin, 20% Polyester. 8% Nylon, 7% Elastaine Moisture control sock that keeps your feet comfortable and lets you get the most out of your workout 73% Drymax Olefin / 11% Polyester / 11% Nylon / 5% Elastane Dual Layer Moisture Removal System & Anti-Blister System Active Odor Control Flat toe seam & Y Heel & 3D Advanced Fit