STYLISH AND PROTECTIVE WINTER BOOTS Stylish and protective, the 1964 PAC™ NYLON offers serious winter protection with a timeless look. Stay comfortable in any conditions. UPPER: Waterproof nylon upper. Seam-sealed waterproof construction. Laces are not waterproof. 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: 1/2 in. PLATFORM HEIGHT: 1/4 in. SHAFT HEIGHT: 7 1/4 in. LACE LENGTH: 42 in. Please note: Laces and zippers incorporated in SOREL footwear are not waterproof. Measurements based on size 9. Imported