UK sizing. The Tatra II offers support even in more demanding terrain and when carrying a heavy load. On flat surfaces and with little or no cargo, they can feel a bit too stiff, making them a solid choice for demanding use. The stability of the shoes comes from two key areas: the midsole is very firm, which reduces strain caused by uneven terrainyet the foot still rolls smoothly thanks to the soles design. Additionally, the sturdy structure around the ankle helps reduce the risk of spraining it. - Top quality nubuck leather surface - Waterproof and breathable Gore-Tex membrane - Medium high-cut upper with reduced seams - Both lightweight and stable construction with Vibram® AW Integral sole unit - B/C stiffness rating