Why you'll love it Our Nation Pro winter boots make it easy to say "bring it on" to anything winter throws at you - built for warmth, comfort, and protection from snow, slush, and sleet. Featuring a waterproof genuine leather upper, HEAT-MX™ thermal insulation, and seam-sealed construction, these boots have got you covered no matter the activity or the weather. A moisture-wicking lining, flexible rubber shell, and self-cleaning treads all work to provide you maximum comfort and stability whether you're building snow forts or chopping firewood. UPPER Seam-sealed waterproof genuine leather upper: Prevents wetness from getting in. Waterproof gusset tongue: Provides extra protection from the elements. Removable HEAT-MX™ 145 sustainable thermal insulation liner: Keeps your feet toasty up to -40°F. Moisture wicking lining: Keeps feet dry no matter the activity. OUTSOLE Waterproof and flexible synthetic rubber shell: Keeps the wetness out. Outsole with deep self-cleaning treads: Provides stability in snowy conditions.