stain-resistant pants and suntan lotions

Nanoscale materials, including particles used today in stain-resistant pants and suntan lotions, are generally less than 100 nanometers in diameter. A sheet of paper, in comparison, is a whopping 100,000 nanometers thick. (nano laws) I want more stain-resistant pants (and a water-resistant jacket)! They’re truly amazing innovations that I’m fascinated by.