The waxed canvas upper and recycled felt liner make this seam-sealed, waterproof boot extra special; it’s perfect for keeping feet warm and dry in cold winter conditions. Construction : Seam-sealed waterproof construction. Waterproof waxed canvas upper. Removable 9mm washable recycled felt inner boot. Waterproof vulcanized rubber shell. Shaft Height: 9 in / 23 cm. Weight: 22 oz / 623 g. Sorel rated: -40° fahrenheit / -40° Celsius. Imported. Fabric : UPPER Waxed canvas. LINING Recycled felt. SHELL Vulcanized rubber.