It is therefore combines the characteristics that you would expect from Lange's expertise with high performance and the special properties of a FREERIDE boot. Equipped with our patented revolutionary technology as well as with an ultra-innovative frictionless rotating hinge, the XT3 140 PRO MODEL gives the foot real mobility and a wide range of movement during ascents. Once at the summit, all that there is left is to start the descent to feel the thrill that runs in Lange's veins and the benefits of our Dual Core sandwich construction. A subtle mix of power and precision.