Like all F-ABRIC materials and pieces, the new E830 UNISEX SWEATSHIRT is free of resource-guzzling cotton. And that's pretty sensible. Not only ecologically but also when it comes down to sweat. Woven fibers like hemp, linen and Modal are moisture-absorbent and even have antibacterial properties. In fact, someone should have turned them into a pullover for stylish all-round wear for work, working out and socializing long ago.