If there is one thing that is absolutely impossible, it is cold and wet feet in the Revel III by Keen. And it doesn't matter if it's raining, snowing or freezing cold. The upper is made of water-repellent nubuck leather and combined with the waterproof and breathable KEEN.DRY membrane keeps your feet dry inside the shoe. Comfortable temperatures are maintained in the Revel III thanks to the 200g KEEN.WARM insulation, which keeps feet warm even at temperatures as low as -32°C. The dual climate rubber outsole offers good grip even at different temperature ranges. So you won't lose the ground under your feet, even if it gets slippery. KEEN.DRYA waterproof, breathable membrane that wicks away moisture from the inside without letting water in from the outside.KEEN.WARMKEEN.WARM is a lightweight insulation made of hollow polyester fibers and heat-storing bamboo charcoal that is highly insulating, antimicrobial and offers a great warmth-to-weight ratio.KEEN.WARM PLUS360° all-round insulation for your feet. Three layers of innovative insulation materials are sandwiched under your feet. Heat TrapolatorThree layers of innovative insulating material keep the warm air under your feet.Thermal Heat Shield FootbedThe 3-layer footbed stores heat and provides support and cushioning. The first layer is woolly soft. Inside, the thermal barrier uses the air as a heat reservoir. The final layer of EVA supports and cushions. - Weight per pair: 940 g - Sizing information: Size is smaller - Fit: normal cut - Details: - TRAPOLATOR Plus insulation system in the area of the sole of the foot Outdoor shoe - Type: Mid Cut - Application: hiking material shoe - Type upper: leather - Lining: 200 g KEEN-WARM insulation - Upper: waterproof nubuck - Type inner lining: textile - Type outsole: rubber - Outsole: dual climate rubber outsole - Waterproof - Type membrane: KEEN.dry Equipment Shoe - Type Closure system: Lacing - Features: Hook fixation - Crampon suitability: not crampon proof