rubber boots all-rubber boots suitable for rain and wet stylish design, matte finish stronger grip well flexible in the direction of walking, but firm under the heel and rigid in the longitudinal bend the toe box up to size 27 is anatomically shaped and only twists very slightly on the big toe side. From size 28 it is more to the toe box, it narrows on the big toe side, so we recommend larger sizes only on narrower foot and not the dominant big toe sits well on the lower instep and slender ankle these are not barefoot shoes, the sole is a bit heavier, compared to standard boots, these are lighter, more flexible, the sole is not such a "tractor" removable insoles without anatomical shaping more detailed description and photos of flexibility: /bisgaard/ Bisgaard Blue boots