WrightSock Double Layer Anti Blister Fuel Cushioned Running Crew Socks 24% nylon Maximum cushion Double Layer style Stabilizer Zone to help lock the sock in place All day comfort with No Blisters, Guaranteed! Mesh panel for breathability Fabric Content: Inner Layer: 66% Dri-Wright II (Polyester), 30% Nylon, 4% Lycra (Spandex) / Outer Layer: 68% Dri-Wright II (Polyester), 24% Nylon, 8% Lycra (Spandex)