"There’s little to no reliable scientific evidence that the copper/compression combo does what manufacturers are claiming. Which is why Tommie Copper and its founder Thomas Kallish agreed to pay $1.35 million to settle Federal Trade Commission charges that they deceptively advertised their copper-infused garments...

"...there is little evidence that shows the efficacy of compressing muscles to improve athletic performance. While some small studies have shown a slight improvement in performance and slightly faster recovery from muscle swelling and pain, most others, including studies of runners, cyclists, and kayakers, have failed to prove that wearing compression garments gave these athletes an edge. To date, there are no large-scale, well-designed studies that have revealed a meaningful link between compression garments and improved athletic performance."