COMFORTABLE FIT WITH VENTILATION… The Nike Everyday Lightweight Footie Socks are made with mesh and a stretchy cotton blend for breathability and a snug, soft feel… Product Features: Sweat-wicking fabric helps you stay dry and comfortable… Mesh panels help keep your feet cool… Reinforced toes add durability… Product Feature Subheads: Product Details: 71% cotton/26% nylon/2-3% spandex/0-1% metalized fiber. Material percentages may vary. Check label for actual content… Machine wash. Imported.