These specially designed, graduated compression socks have copper infused fibers to help enhance circulation, reduce swelling, ease pains, and soothe tired, aching legs and feet. Moisture-wicking fibers help keep feet dry, healthy and comfortable, while the anti-microbial benefits of copper naturally control odor-causing bacteria and fungi. Great for men or women. Specify size: Small fits Womens shoe sizes 6-9 1/2 and Mens 5- 9 1/2. Large/Xlarge fits Womens 10-13 1/2 and Mens 10- 12 1/2. Machine Washable Cold Water