Quick Duck: 8.5-ounce, 88% cotton/12% nylon; 20% lighter but just as warm as heavier outerwear, Mighty Back bi-swing between shoulders for instant recovery, Flex Elbow for less restriction: it has an inside stretch panel and articulated seams on the outside, Sleeve-riding-up prevention in the form of an under arm Freedom Gusset and stretch side panels, Vislon front zipper with Nomex FR zipper tape plus inside protective flap, Meets the performance requirements of NFPA 70E and is UL Classified to NFPA 2112, Imported,