WARM AND COSY WATERPROOF WINTER BOOTS Waterproof seam-sealed finish, sherpa pile snow cuff and cosy 9mm felt removable liner keep their feet warm and dry in wet and snowy weather. Toggled laces are easy to adjust provide a flexible fit. Upper: Waterproof PU coated leather 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 nonloading outsole. Sorel Yoot Pac Nylon Waterproof Boots