PrimaLoft ThermoBall™ insulation at the body, hood, and sleeves Internal elastic cuff Shaped hem Hood with bonded peak Secure-zip hand pockets The insulating Thermoball Shell jacket from The North Face offers insulation and breathability, ideal for transitional climes. You can rely on the Thermoball insulation to keep you warm, and the DryVent technology makes this jacket waterproof. The elastic cuff adjuster, shaped hem, and bonded-peak hood give extra comfort and protection. The jacket is finished with zip-closure flap pockets to provide security and hand warmth.