Look up: microfiber

1. 
   Microfiber
   fabric of tightly woven polyester or nylon fibers that offers good resistance to wind and light rain, as well as breathability. Shells used for high-energy, outdoor workouts are frequently made of this lightweight fabric.
   Found on http://www.rei.com/learn/Crosstrain/rei/
   
   
2. 
   Microfiber
   `Microfiber` `(British spelling: `Microfibre`)` is fiber with strands less than one denier. Microfiber is a blend of polyester and polyamide. Fabrics made with microfibers are exceptionally soft and hold their shape well. When high quality microfiber is combined with the right knitting process, it creates an extremely effective cleaning material. This material can hold up to seven times its weight in water. They are also used for some cleaning ap...
   Found on http://en.wikipedia.org/wiki/Microfiber
   
   
3. 
   microfiber
   Extremely fine, tightly woven fiber that combines natural breathability with wind and water resistance. Microfiber fabrics are used in performance outerwear, and are often laminated to waterproof/breathable fabrics or treated with waterproof/breathable coatings.
   Found on http://www.ectextile.com/glossary.asp?
   
   
4. 
   Microfiber
   An extremely fine synthetic fiber usually woven into soft, light weight, washable, breathable fabrics. Tends to stretch and be a bit more formfitting.
   Found on http://www.labeshops.com/news/?page_id=9