11-ounce knit made of 88% cotton / 12% high-tenacity nylon, heavyweight Nomex® zipper tape This sweatshirt is one of our most versatile workwear items. It's a durable, 11-ounce knit made of 88% cotton / 12% high-tenacity nylon, and features an attached three-piece hood with a drawcord for a snug fit. The brass zipper front closure has protective Nomex® zipper tape, and it has interior and exterior protective flaps as well as front hand-warmer pockets