Teko Women's M3RINO.XC Lightweight Merino Wool Poly Blend Running and Cycling Socks Designed for running and cycling Organic, chlorine-free tekoMERINO wool is naturally wicking and insulating; recommended for all weather conditions Exceptional fit: Seamless toes, arch support, anatomical y-heel, Strike-Zone Cushioning; narrower heel, tapered toe for women; comfort-stretch zones Reinforced with soft, durable tekoPOLY recycled polyester Made in USA