Keeping your closet space free for extra gear, the Columbia Hyper-Boreal Omni-Heat treads efficiently between sidewalk café strolling and rugged alpine trail hiking as your all-in-one winter adventure boot. A smooth, waterproof zipper closes the Hyper-Boreal and readies you for icy, urban winds. Warming your toes with the comforts of home and bracing against the crumbled, battered pavement, the Omni-Heat lining and 200-gram insulation are complemented, respectively, by the durable fiberglass-infused rubber outsole. And chance rainstorms are taken in stride with the TPU laminated mesh upper that is as ready to perform at the trailhead as it is at the office.