Upgraded Waxed Tuscan full-grain leather uppers are rich and long-lasting. These beautiful leathers are enhanced with Zamberlan's proprietary Hydrobloc treatment for added water resistance and durability over time New calf-leather-lined collars add durability and comfort around the upper ankle. Get the feel of a leather-lined boot without compromising on waterproof performance Gore-Tex Performance Comfort membranes guarantee waterproof and breathable protection for the life of the boot The proprietary Zamberlan Vibram 3D outsole with PU midsoles make for unique and unparalleled fit and performance. Large lugs can tear through any terrain while the pronounced rocker feels as if it is carrying you and your pack up the mountain. Excellent downhill braking is achieved with a steep heel undercut and superb torsional rigidity is achieved through a solid TPU plate over the arc PU coated rubber toe rands add durability to the boot and life to the leather uppers, especially above the toe bump