The Sorel Caribou Men’s Boot is often imitated but never equaled, featuring 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.Construction:*Seam-sealed waterproof construction*Waterproof nubuck leather upper*Removable 9mm ThermoPlus felt InnerBoot*Sherpa Pile snow cuff*25mm bonded felt frost plug*Handcrafted waterproof vulcanized rubber shell*SOREL AeroTrac non-loading outsole*Shaft Height: 10 in / 24.5 cm*Weight: 34 oz / 964 g*Sorel rated: -40 degree Fahrenheit / -40 degree CelsiusUpper:Nubuck upper, Sherpa pileLining:ThermoPlus Shell:Vulcanized rubber Outsole:AeroTrac