Stay warm and dry on the chilliest days with the Revel IV High Polar Boot! Featuring a higher profile for better powder performance, our warmest insulation (rated to -40°F!), and KEEN's Polar Traction outsole for increased grip on ice and snow. Plus, Heat Trapolator technology, 400g of recycled PET insulation, and a stability shank for lightweight support. And with eco-friendly leather and anti-odor for natural odor-control, your Revel IV will go the extra mile! Try the original fit—the iconic KEEN fit with plenty of toe room.