KEEN Durand Low WP Walking Shoes - SS16 nubuck Keen Dry Waterproof Breathable Membrane - A proprietary waterproof, breathable membrane that lets vapour out without letting water in. Non-marking Rubber Outsole - Delivers substantial grip and traction on a multitude of surfaces. TPU Stability Shank - Provides torsional stability and prevents the boot from twisting throughout the midfoot, ideal for uneven terrain. Metatomical Footbed Design - Internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot. KEEN.Protect - Extends across the top of the toe, in turn protecting the more vulnerable parts of the foot from knocks and abrasions.