\" \" Organic Basics sells underwear coated with SilverTech, which supposedly lets you go weeks without washing it. This Danish startup is out to make the fashion industry greener in part by manufacturing underwear that you can wear for days without laundering, if you can stomach the concept. The company treats its SilverTech undergarments with Polygiene, a silver chloride-based coating that's meant to kill 99.9 percent of bacteria it contacts. He said he's spoken to customers who have worn his company's basics for weeks between washes. So, can you really wear these undies for weeks without laundering?