Men's Sorel Caribou - Buff Our most iconic winter boot is back with fresh upgrades. It features a sleeker look, seam-sealed waterproof leather, and never-slip traction. Supreme insulated warmth adds the finishing touch to the greatest boot of all time. DETAILS: UPPER: Waterproof nubuck 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 Sorel aero-trac non loading outsole. HEEL HEIGHT: 1 1/4 in. PLATFORM HEIGHT: 3/4 in. SHAFT HEIGHT: 9 1/4 in. LACE LENGTH: 50 in. Please note: Laces and zippers incorporated in SOREL footwear are not waterproof. Measurements based on size 9. Uses: Heavy Snow