2NDS . Constructed from 70% recycled plastic bottles, Fox River's polyester liner socks are an environmentally friendly treat for your feet. Refined and purified bottles are processed into spun fibers with the same look, feel and protection as traditional polyester and cotton. Eco Concious Lightweight Crew height varies, may not specify Fabric 70% FortrelR ecospun polyester, 30% stretch nylon Care Machine washdry 2NDS , barely perceptible blemishes. USA. Size S W 4 6 M W 6 10, M 5 8 L W 10 12, M 9 12 XL M 13 15 Available Colors WHITE. Sizes L, M, S, XL, XS.