The North Face Royal Blue thermoball Puffer Jacket Size small, like new Mens Blue 15D nylon ripstop with 10 g/ft2 ThermoBall insulation throughout the body and 13 g/ft2 in the collar. center front zip Covered, secure-zip hand pockets Stowable in hand pocket Internal elastic-bound cuffs Hem cinch-cord. Fabrics: solid: 15D 33 g/m2 100% nylon ripstop with durable water-repellent (DWR) finish. print: 30D 46 g/m2 100% nylon with DWR finish Insulation: 10 g/ft2 and 13 g/ft2 PrimaLoft ThermoBall? synthetic insulation