Burton Ultralight Wool Sock - Women's Dusk Medium/Large Polyester 67% Nylon, 9% Acrylic, 9% Merino Wool, 7% NanoGLIDE, 6% Polypropylene, 2% Spandex Quick-Drying and Stink-Proof Polypropylene Reinforced Footbed Elastic Arch and Ankle Support Chafe-Free Link Toe Seam Ergonomic, Articulated Left and Right MotionFit