Combining ultralight elements of our Alien race boots with a more versatile, backcountry-oriented design, the all-new F1 LT is our lightest weight alpine touring boot, optimized for high-mileage missions, ambitious traverses, and technical ski mountaineering descents.

• Carbon Grilamid LFT shell & cuff delivers incredible power to weight ratio
• 3D Lambda Torsion Frame increases lateral stability and downhill performance
• Speed Lock ski walk mechanism is strong, precise and easy to use
• Boa Fit System for a fast and secure fit
• Waterproof gaiter system provides total snow protection
• New Zeppa increases ramp angle by 3.5 degrees
• Weight Reference : 990g; 2lb 2.9oz (1/2 pair size 27)
• Liner : Intuition Cross Fit Tour LT
• Last : 100mm
• Outsole : Vibram UFO RS
• Shell : Carbon Grilamid LFT
• Cuff : Carbon Grilamid LFT
• Flex : 100
• Forward Lean : 9 / 11 / 13 /- 2
• Range of Motion : 72
• Ski/Walk Mode : Speed Lock LT
• Closure : 1 Buckle Boa Fit System
• Binding System : TLT
• Optimized Touring Pivot : 1mm