These therapeutic socks with copper fibers provide gentle, graduated compression (14-17mmHG) to help enhance circulation, ease swelling and reduce pain while energizing your tired, aching legs. They are lightweight and breathable with an open-toe design to keep you cool and comfortable, and the non-pinching zipper makes them easy to put on and take off. Hand wash. Copper, polyester and elastane. Perfect for men and women. Choose: S/M (for calves up to 16" circumference) or L/XL (for calves up to 19" circumference).