Only the ATI Microfiber Emergency Blanket incorporates the science of microfiber to keep you warm and comfortable. The microscopic fibers that make up our microfiber fabric are 10 times smaller than a strand of silk and 100 times smaller than a human hair. This mircofiber technology makes it possible to create a soft, fleecy, lightweight blanket that holds warmth and still folds compactly for easy storage or travel.