The Crispi Altitude GTX was conceived and built with a desire for the breathability and technical fit found in models like the Attiva Mid, combined with the foundation and long lasting comfort of the EFX dual density polyurethane midsole that hunters rely upon when long miles and the occasional heavy load is expected. With a constant and even flexing board last construction (Flex 2.5 rating) and our exclusive Vibram® Megagrip outsole, makes traversing variable terrain a breeze. We've added features like the ultra soft leather and synthetic upper, the Crispi Thermo Wire Technology, and a full PU coated leather rand to ensure the Altitude GTX will endure well whatever hunt or adventure you embark upon. The Altitude GTX is a new kind of hunting boot ready to provide all day comfort, optimal performance, and ground feel that traditional boots haven’t been able to deliver.