Nothing says winter like this tough, snow-ready boot. Packed with a waterproof nylon upper, seam-sealed and insulated to keep the chill out, you'll wear these every day. Specs UPPER: Waterproof nylon upper. Seam-sealed waterproof construction. INSULATION: Removable 9 mm washable recycled felt inner boot with Sherpa Pile snow cuff. MIDSOLE: 2.5 mm bonded felt frost plug. OUTSOLE: Handcrafted waterproof vulcanized rubber shell with herringbone outsole. HEEL HEIGHT: 4/5 in. PLATFORM HEIGHT: 1/2 in. BOOT SHAFT HEIGHT: 9 5/6 in. Measurements based on size 9. SOREL rated: -40° Fahrenheit / -40° Celsius.