The Keen Women's Elsa Chelsea Waterproof Boot is an ankle boot for winter days. Every day on your way to work, then switch 'em out with an office shoe when you arrive. Or perhaps you'll just slip the rubber Outsole and spend the whole weekend running about getting prepAred for the holiday. KEEN. Warm Insulation for toasty toes and waterproof protection to keep the Snow from melting inside.Features of the Keen Women's Elsa Chelsea Waterproof Boot Cleansport NXT for natural odor control Heat reflecting strobel provides a thermal barrier for warmth Microfleece lining Seam sealed waterproofing Vulcanized construction