Teko Winter Sport Ski Pro Ultralight Sock 60% Merino Wool / 19% Recycled Polyester / 18% Nylon / 3% Elastic Made in US Created for performance and comfort, Teko Organic Merino wool socks are extremely soft and naturally moisture-wicking. Special machines create a seamless toe, crush-resistant cushioning and a softer, more durable sock. 64% organic merino wool, 18% recycled polyester, 13% nylon, 3% Lycra Spandex Comfort-stretch cuff, seamless toe, forward flex zone, To conserve resources like energy, raw materials, water, and transportation emissions, Teko reinforces their Evolution Merino Wool socks with recycled polyester. Comfort stretch waffle knit instep, stay-put ankle band, vapor channels and y-heel gore for articulated fit, The socks are proven to last longer which benefits the planet and your wallet. Machine Washable