Tommie Copper Men's Recovery Refresh Knee Sleeve 86% Copper Polyester, 14% Spandex Imported Comfortable compression that provides support for muscles and joints all day, every day. Compression helps relieve everyday aches. CopperZnergy fabric eliminates odor causing microbes on fabric. UPF 50+ protection from the sun's harmful UV rays. The ORIGINAL copper and zinc infused compression sleeve ; CopperZnergy fabric eliminates odor causing microbes on fabric. ; UPF 50+ protection from the sun's harmful UV rays.