Amazon.com | SOREL Men。Sorel Men\'s Caribou Waterproof Lace-Up Winter Boots in Brown Black Size 11 Excellent Used Condition Often imitated but never equaled, the original Sorel boot features a nubuck leather upper with waterproof construction, seam-sealing and a removable ThermoPlus™ felt inner boot for warmth, comfort and protection in cold and wet winter weather. Best For: Heavy Snow UPPER: Waterproof nubuck leather upper. Seam-sealed waterproof construction.. FOOTBED: N/A 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. No trades, offers welcome!