These Wrightsock Eco Hike Crew socks combines the reliable performance of the brand you've come to love with recycled materials so you can get out there and celebrate your love for Mother Nature with confidence. Crew socks that sit at the calf. Sold as one-pair pack. Signature Double Layer construction absorbs friction, helps keep your feet dry, and helps with temperature regulation so you can stay on-the-go all day long. REPREVE recycled blended fabric utilizes plastic bottles in the construction to help reduce waste. Dri-WRIGHT II moisture-managing fibers help feet stay cooler and drier. Stabilizer Zone in arch keeps the sock in place. Breathable performance mesh panels allow greater air flow to keep your foot cool. Elastic arch bands help provide outstanding support for all day comfort. Inner Layer: 70% Dri-Wright II REPREVE polyester, 26% nylon, 4% Lycra;Outer Layer: 74% Dri-Wright II REPREVE polyester, 20% nylon, 6% Lycra. Machine wash, dry flat.