The North Face's ThermoBall® button-up snow boots pack in the warmth with PrimaLoft® insulation and a cozy, supersoft faux-fur lining. A textured, quilt-stitched upper adds a little bit of winter style, too. ThermoBall by PrimaLoft® synthetic insulation traps and retains heat in small air pockets to provide effective warmth, even when wet Quilt-stitched fabric upper with synthetic overlay Button loop side closures for easy on-off Plush faux-fur lining Grippy synthetic rubber