This year our premium take on the Caribou comes wrapped in luxuriously soft durable bison leather and topped with a sleek silver fox snow cuff in the Sorel Men's Caribou Reserve LTD Snow Boots. Rated to -40 below zero the leather upper and handcrafted vulcanized rubber shell are seam-sealed for complete waterproofness and lined with a removable 9mm felted wool InnerBoot that traps heat next to your foot where it belongs. Weve even included an additional removable felt liner with a leather bottom thats sturdy enough to wear as cozy slippers while you kick it in the lodge. Underfoot a thick rubber midsole insulates the boot from cold ground while the Sorel AeroTrac non-loading outsole provides sure footing.[]More detail ...