What is the fine-grained topic of the following text: Medicore products place Copper CuTEC® and PTFE NanoGLIDE® at performance points throughout each product to maximize the benefits to the wearer -- bio-engineered man-made fibers, which through research and engineering knowledge have been applied to the fields of textiles, medicine, and biology. Only return the topic.
Use of Copper CuTEC® and PTFE NanoGLIDE® in Medicore products