Ever since the TV show Survivor came on the air 20 years ago, we know about the many uses of a Buff Multifunctional Headwear piece, and the brand name Buff has become the proprietary eponym for any such piece of clothing. Buff continues to produce high quality products with new looks and new and improved materials for different uses. The latest improvement on their already great fabric choices is the DryFlx line. According to the…