Kamik Greenbay 4 - Women's Cold Weather Boots: Black: Stay warm and dry with the Kamik Greenbay 4 as you trudge through the rain, snow and sludge in style and comfort! ; Weatherproof durable 600D nylon upper. ; Waterproof and flexible synthetic rubber shell. ; Kamik's weatherproof construction offers protection for when winter weather attacks. Water repellant uppers combined with waterproof shells help keep snow and slush out. ; Snow collar and adjustable midfoot hook-and-loop strap help create a comfortable and personalized fit. ; Moisture-wicking lining. ; Removable 8mm Thermal Guard Liner. Made by Kamik, this liner is designed to provide superior warmth and moisture management. ; PRIME outsole maximizes traction. ; Temperature rated: -40°F/-40°C. ; Made in the USA of imported materials. Measurements: ; Weight: 1 lb 7 oz ; Circumference: 17 in ; Shaft: 11 in ; Product measurements were taken using size 7, width B - Medium. Please note that measurements may vary by size.