Teko tekoPOLY Ski Ultralight Sock 3% spandex Created for performance and comfort, Teko recycled polyester socks are extremely soft, quick-drying and durable. Special machines create a seamless toe, crush-resistant cushioning and a softer, more durable sock. 74% recycled polyester, 23% 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 socks with recycled polyester. Comfort stretch waffle knit instep, stay-put ankle band, vapor channels and y-heel gore for articulated fit Machine Washable