Details Altberg Mallerstang Walking Boot We keep a considerable range of sizes and widths of all Alt-Berg boots in the Boot Room at our Hathersage branch. We are also easily able to order sizes that are not available to buy above. If you have any queries feel free to contact us. The Altberg Mallerstang is a superb classic leather mountain walking boot. The fitting and comfort are excellent. The leather is a 2.8mm full grain cullate Anfibio - and the boot will take a flexible walking crampon but not a rigid climbing crampon. The sole is Vibram - deep cleated for enhanced traction with a PU shock absorbing mid layer. The Tri-Flex midsole is an Alt-Berg design and is only used in Alt-Berg boots. All boots are built on the midsole - it is the foundation of the boot. The midsole controls the underfoot support, the toe spring and the flex of the boot. The Tri-Flex Midsole uses a unique three dimensional insole design with an N.C. controlled polymer nylon mix to achieve the optimum flex for different categories of boots. Good bootmaking starts with the midsole - customers can't see it, it is built into the boot - but it is the most important component of the boot and it makes a huge difference to how the boot feels and performs in wear. Weight 884g (UK 9) Superb support and fitting Classic one piece leather upper Graded 3-4 season midsole Will take a flexible 'strap on' walking crampon Uppers: 2.8mm Anfibio full grain water repellent European leather Lining: Sympatex Midsole: Tri-flex Sole: Vibram Ice Trak Sizes: 5 - 13½ 5 Width fittings: XN (Extra Narrow) N (Narrow) M (Medium) W (Wide) XW (Extra Wide) Made in Italy Alt-Berg only recommends Leder-Gris, they do not recommend dubbins, saddle soap, or any Kiwi type polishes" Specifications Mallerstang Walking Boots