Mammut Sapuen High GTX Hiking Shoes - Mens Wren/Amber Green US 13. Mammut Flextron technology supports the natural rolling movement of the foot and thus more efficient use of energy when hiking and mountaineering while Mammut Georganic 3D technology guarantees maximum comfort. All components in contact with the foot are anatomically shaped with great precision while the classic tongue construction offers easy entry. Optimized for hiking: a Vibram rubber blend for secure grip on outdoor surfaces and a sole design that supports self-cleaning. The waterproof GORE-TEX membrane guarantees dry feet. Specifications for Mammut Sapuen High GTX Hiking Shoes - Men's: Manufacturer: Mammut Gender: Male Age Group: Adults Heel Height: 10 mm Footwear Type: Shoes Activity: Hiking Weight: 530 g Footwear Closure: Laces Footwear Upper Fabric/Material: Double Engineered Mesh Lining Material: Core Tex Outsole Material: Vibram Flextron II Features of Mammut Sapuen High GTX Hiking Shoes - Men's Elastic knitted sock construction 3D Memo Foam: cushioning adapts to your foot shape for exceptional comfort support and blister prevention. Package Contents: Mammut Sapuen High GTX Hiking Shoes - Men's Mammut 3030-04241-7499-1200: Sapuen High GTX Hiking Shoes - Men's Wren/Amber Green US 13