The North Face Inner Thermoball™ Jacket is a must-have for all-season hikes. The combination of PrimaLoft® ultralight synthetic insulation with the quilting pattern for vast warmth with little weight to slow you down makes it the ideal durable and easily packable on-the-move jacket for the vivid explorer.. Features:. 100% nylon, 45 g/m², 30 deniers with WindWall™ and DWR finish. Insulation: 60g PrimaLoft® ThermoBall™ and PrimaLoft® Silver insulation. Elasticated cuffs for additional warmth. Two hands zipped front pockets to store valuables. Compatible with 3 in 1 North Face Jackets