This waterproof boot features a supple full-grain leather upper and a slightly lighter shell than the caribou, making it great for keeping feet warm and dry without weighing you down during a long day out in the weather. Sorel brings back the '60s with this retro-styled cold weather boot. Seam-sealed, with a waterproof leather upper, this lace-up features a sherpa pile snow cuff, felt liner, and comfort rating to -40 degrees Fahrenheit&mdash^tough enough for even the most extreme outdoor enthusiast. The herringbone outsole is fashioned of handcrafted rubber, while the cushioned insole is removable for easy cleaning. Warm and comfortable, this is the boot you can rely on to walk you through the nastiest weather. Sorel's cold weather footwear is ideal for those participating in active winter sports like snowmobiling or sledding, or for activities where maximum protection is required -- like all-season hunting or fishing, or simply going to work.