A technical boot for technical ascents Ski mountaineers rejoice. The Dynafit TLT 6 is all about serious performance, on or off your skis. The Grilamid shell resists the coldest temperatures and stands up to the the sharpest rocks and talas fields you may find yourself hiking. Inside the shell is a heat moldable liner that makes these boots feel like slippers without providing too much insulation that can lead to sweaty feet at the top of a route. A destructured flex zone in the liner allows you to take full advantage of the shell's 60 degrees of cuff rotation. Getting really technical No problem. A short sole allows for perfect crampon fit. For those who are taking an equally technical route downhill, the TLT 6 has you covered. Flex can be adjusted using different tongues choose black for very stiff, colored for medium stiffness, or remove the tongue all together for a soft flex. Don't let the number of buckles fool you, the TLT 6 is a very capable performer on the downhill with plenty of stiffness for control and precision. Features Benefits a Performance oriented 99mm last. a Dynafit Claw rockered Sole. a Pebax, and grilamid construction. a Thermo moldable liner with flex zone for easy touring. a Removable and interchangeable tongues. a Dynafit walk mode cuff buckle. a 15 to 18 degree adjustable forward lean.