Duluth Trading Co. Women's Stay-Put Lightweight Ankle Socks New Size: Large 9 - 12 Color: Blue with red/white mushrooms Features Lightweight warm-weather socks that are 25 times more durable than cotton Polyester yarns feel cottony soft and wick moisture quick Contoured rib top and compression zones fight fatigue and prevent bunching and sagging Friction-fighting NanoGlide® nylon in the heel and toe disperses moisture, prevents hot spots NanoGlide nylon also adds durability in the high-wear heel and toe areas Aegis Microbe Shield® for antimicrobial odor and stain protection Mesh zones in ankle and toe give feet a breather Non-cushioned footbed 47% polyester/46% nylon/5% NanoGlide nylon/2% spandex Machine wash