Features:

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