The 906 Boulder is a wide, deep fitting workboot. The cut in the upper is nice and full, so it’s perfect for our wide-footed friends, those with high arches or a standard size foot that needs an orthotic. Using the highest-quality full grain kip leather – it’s supple, robust, and ages well. The Enigma TPU outer sole is slip, oil and acid resistant, while the PU midsole provides cushioning comfort.