Revel ii winter hiking boots mean neither rain nor snow will keep you from your appointed anything. The whatever-the-weather nubuck leather is all-terrain durable and lined with the KEEN. Dry waterproof, breathable membrane. Two types of insulation – KEEN. Warm up top and the tri-layer heat trapolator system underfoot – cut the chill, and the dual compound snow and ice grip Outsole holds its ground.