
Combining ultralight elements of the 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.
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: 9º / 11º / 13º +/- 2º
Range of motion: 72º
Ski/walk mode: Speed Lock LT
Closure: 1 Buckle + Boa® Fit System
Binding System: TLT
Optimized touring pivot: 1mm
Liner: Intuition® Cross Fit Tour LT
Last: 100mm
Outsole: Vibram® UFO RS
Shell: Carbon Grilamid® LFT
Cuff: Carbon Grilamid® LFT
Flex: 100
Forward lean: 9º / 11º / 13º +/- 2º
Range of motion: 72º
Ski/walk mode: Speed Lock LT
Closure: 1 Buckle + Boa® Fit System
Binding System: TLT
Optimized touring pivot: 1mm
• 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°