The Drymax Running Lite Mesh Mini Crew is a versatile running sock that can be used for casual or ultra-distance runs. They are engineered underfoot with plush feeling terry loops for comfort. The proprietary Drymax® Dual-Layer Sweat Removal system will keep your feet drier and blister-free. Additionally, Mesh Stripe Vents over the foot and under the arch provide remarkable breathability, helping keep feet cooler, drier, and comfortable. These performance socks are made in the USA and are 48% Drymax/Olefin, 31% Polyester, 10% Elastane, 6% Nylon.