The Valdres II GTX is a high-performance, do-it-all non-insulated boot that combines the durability and longevity of leather with the breathability of a stretch Nylon tongue. They come equipped with a Vibram Full-Control outsole that grips well to any form of rock, clay, mud, or dirt and is designed to provide the ultimate level of traction and control. The Board Lasting Mechanical Construction achieves the perfect connection between torsion rigidity and flexibility thanks to a mechanical process that wraps the comfortable and soft part of the upper to the insole frame. To promote greater comfort, the Valdres II GTX features the Crispi Crossbow Frame (C. C.F.). This innovative midsole functions similar to a crossbow (hence the name) and follows a particular form in a waving module which offers a perfect stability, sustaining the foot and, at the same time, absorbing the shocks during the walk. Comfort is further enhanced thanks to Crispi's Anatomical Fit System, which wraps the foot in a natural, anatomically correct position. This causes the boot to become lighter and provide better control of the foot when walking. Additionally, the Valdres II GTX Boots also features Crispi's proprietary Thermo Wire Technology to promote greater stability, ankle support, and protection without any unnecessary weight. Features of the Valdres II GTX: Vibram Full-Control outsoleBoard Lasting Mechanical ConstructionCrispi Crossbow Frame (C. C.F.)Crispi Anatomical Fit SystemThermo Wire Technology Crispi Men's Valdres II GTX Boots 9289-4266 in Brown, 8D