These medium weight socks are made from soft Merino wool and durable acrylic. With great fit and support, you are cushioned, dry and comfy no matter where you end up. a WoMen&';s fit a Reinforced Heel/Toe a Shock Absorption a Stay Up Power a Comfort Toe Seam a Arch Support a WoMen&';s Fit Specific a Memory Knit a Moisture Wicking a 39% Nylon, 26% Merino Wool, 26% Acrylic, 7% Polyester, 2% Spandex a Style #2557