Our are 100% Safety Orange Fluorescent spun polyester microfiber fleece, weighing in at 10.5oz. The zip-hooded style has metal snaps so the hood can safely detach if snagged. It features a rugged YKK zipper, two pouch pockets for warming hands on chilly mornings, and 3M^TM Scotchlite^TM Reflective Material. You may to wear the sweatshirt alone or zip it into the lining of the 431 parka to form a waterproof systems jacket.