Tommie Copper Men's Recovery Jolt Dress Over The Calf Socks 55% Nylon, 35% Copper Nylon, 10% Spandex Made in US Comfortable compression that provides support for muscles and joints all day, every day. CopperZnergy fabric eliminates odor causing microbes on fabric. Knitted rib arch design provides added support. UPF 50+ protection from the sun's harmful UV rays. The Over the Calf Dress Socks feature graduated compression which helps aid muscle recovery for all day comfort and support. Made with our exclusive CopperZnergy fabric and Cool Copper technology.