UK sizes. Wide last hiking boots with great comfort and great support! Meindl has used its ComfortFit last in a pair of high support hiking boots. This shoe has the Meindl MFS system: memory foam panels around the ankle enable an extremely comfortable fit. The panels can be seen in yellow in the additional image. - Surface material: top quality oiled nubuck leather - Waterproof and breathable, thanks to a Gore-Tex membrane - Stiffness rating: B/C (very supportive, suitable for difficult terrain and heavy loads) - Digafix system keeps your heel in place in the heel cup - Cork insole with removable 2 mm thick middle layer (Meindl Volume Adjustment, see extra image) - The MFS material used in the padding of this boot reacts to pressure and your body heat, conforming to your foot shape