The North Face Thermoball Hoodie Jacket - Men's Shady Blue Medium Nylon Ultralight, packable, hooded insulated jacket retains warmth even when wet ThermoBall powered by PrimaLoft offers the lightweight loft, warmth and compressibility of down with the wet-weather insulating performance of synthetics 15D nylon ripstop with ThermoBall insulation Secure-zip covered hand pockets 15D nylon ripstop with ThermoBall insulation