The Highest Copper Content. Copper Compression products have the highest copper content. Rather than spraying fabrics with copper, we infuse it directly into the nylon fibers. Our products are constructed with 85% copper-infused nylon. This innovative approach brings you maximum hygienic benefits, enhanced protection and a superior experience. Copper Compression products utilize genuine copper ions (Cu+ and Cu++) rather than copper oxide (Cu2O). This is an important distinction because it means that we not only have the highest copper content... we also utilize the HIGHEST QUALITY copper. We believe that if you are buying copper-infused products that you should get actual top grade copper at the highest copper content available. The Copper Compression Difference 85% copper-infused nylon (#1 highest copper content). Compression + stability support your body during all activities. 4-Way stretch construction enhances your movements while providing the flexibility to flow freely. Moisture wicking materials that dry fast, keeping you cool and comfortable. Copper Compression provides you a 100% Satisfaction Guarantee! If you are not completely satisfied with this product for any reason, we will gladly issue you a prompt refund, no questions asked!