An extremely breathable membrane that is sandwiched between the outer material and the inner lining, which makes the product waterproof.
About Wide Width Boots:
Based on the standards of width fitting set by the footwear industry, wide width boots are described as broad boots measuring 3.8" to 4.4" at the ball of the foot for men sizes 6 to 11. Wide width boots are given the letters E and W. Letters or numbers in front of the main letter will indicate a wider width. For example, EE or 4E indicates a wider width than E.
