Our favourite Keen Revel boots are now a little bit taller and a little bit warmer! These Revel IV High Polar's are made with 400g of Keen Warm making them cold rated to -40C, they have Keen Polar Traction for better grip on snow and ice and have 5mm multi directional lugs for added traction. These boots are waterproof, they have a leather upper and have heat trapolator technology (Which is 3 heat trapping materials underfoot to keep your feet warm). #1029412