Features:

Quick Duck fabric: 8.25-ounce, water repellent cotton poly blend with spandex is 30% lighter than sandstone duck, and ounce-for-ounce as durable. Quilted to 80 gram 3M Thinsulate in
Rain Defender durable water repellent
Built to move with Rugged Flex technology
Mighty Back bi-swing between shoulders for instant recovery
Swing that axe with the 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 underarm Freedom Gusset and stretch side panels