Crispi Men's Altitude GTX Waterproof High Hiking Boots - 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. Gore-Tex waterproof lining Vibram Megagrip outsole with EFX dual-density polyurethane shock-absorbing midsole 2.5 flex rating Board lasting mechanical construction Crispi Crossbow frame Greased water-repellent Nubuk, breathable synthetic upper Removable CRISPI Air Mesh insole Double stitched polyurethane coated leather full rand 8in height Style: 1425