Men's Helly Hansen Work Jacket: Helly Hansen's outerwear. Tough, durable, and rugged. This armour Jacket from Helly Hansen has a tear resistant outer shell of high tenacity 420 Denier Nylon. It features an inner layer of 170 g/m2 nylon knit PU Full waterproof fabric, generously cut 3 panel hood, durable inner and outer storm flap, concealed stainless steel rust resistant snap closure, and an inner liner has micro weld seams.