Modified silk cloth keeps skin cooler than cotton

https://phys.org/news/2021-11-silk-skin-cooler-cotton.html

"silk does a good job of reflecting sunlight in the mid-infrared range... To make the silk material [also be] UV reflective, the researchers dipped a standard piece of silk fabric into a liquid solution containing highly refractive inorganic oxide nanoparticles... found that it kept the artificial skin approximately 12.5 degrees Celsius cooler than standard cotton material. Further testing showed that the material was able to reflect approximately 95% of sunlight"