Alpine Touring Ski Boots

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 an 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° FEATURES: BOA FIT SYSTEM - The patented Boa Fit System consists of three integral parts: a micro-adjustable dial, super-strong lightweight laces, and low-friction lace guides. Each unique configuration is engineered for effortless precision delivering a connected, fast, customized, and durable fit, and is backed by The Boa Guarantee. The F1 LT system is an exclusive floating system located under the waterproof fabric cover that contracts downwards on the instep of the liner as the dial is tightened, precisely controlling volume and fit. 3D LAMBDA FRAME - Similar to an i-beam, the 3D Lambda Frame adds raised ribs of Carbon Grilamid LFT in a specific pattern along both sides of the shell. This design significantly increases strength, durability, and torsional rigidity with minimal added weight. The 3D Lambda Frame improves responsiveness and overall performance, allowing you to focus on the terrain and not your boots.

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 and cuff are made of CG-LFT, a carbon-reinforced polymer that is super-light but still stiff and strong Speed Lock LT: - Simple and secure, with 3 forward lean positions, the Speed Lock LT ski-walk mechanism is strong and reliable on the downhill and fast on the transitions Fast Buckle Closure: - One buckle and a wide hook and loop strap that guarantees a rapid and precise closure. Flip the FBC open and Speed Lock LT up and you are ready to tour - BOA® Fit SytemL Dial in the perfect fit without exclusive floating BOA®Fit System closure, providing precise and secure adjustments with no pressure points Vibram® UFO RS Sole: - Made with TOP85 compound that offers great durability and grip in cold conditions FEATURES: BOA FIT SYSTEM - The patented Boa Fit System consists of three integral parts: a micro-adjustable dial, super-strong lightweight laces, and low-friction lace guides. Each unique configuration is engineered for effortless precision delivering a connected, fast, customized, and durable fit, and is backed by The Boa Guarantee. The F1 LT system is an exclusive floating system located under the waterproof fabric cover that contracts downwards on the instep of the liner as the dial is tightened, precisely controlling volume and fit. 3D LAMBDA FRAME - Similar to an i-beam, the 3D Lambda Frame adds raised ribs of Carbon Grilamid LFT in a specific pattern along both sides of the shell. This design significantly increases strength, durability, and torsional rigidity with minimal added weight. The 3D Lambda Frame improves responsiveness and overall performance, allowing you to focus on the terrain and not your boots.

The standard-setting benchmark for lightweight touring performance, the F1 features a responsive, laterally stiff design and an incredible range of motion, as well as an Intuition liner, integrated RECCO reflector, and new tongue alignment extension on the shell. - Grilamid shell and cuff deliver lightweight performance - Carbon Core technology provides outstanding torsional rigidity - Fast buckle cuff closure provides quick transitions from up-to-down - Boa Fit System shell closure for a fast and secure fit - F1 manual ski/walk mechanism is quick and reliable - RECCO technology for added safety FEATURES: BOA FIT SYSTEM - The patented Boa Fit System consists of three integral parts: a micro-adjustable dial, super-strong lightweight laces, and low-friction lace guides. Each unique configuration is engineered for effortless precision delivering a connected, fast, customized, and durable fit, and is backed by The Boa Guarantee. The F1 LT system is an exclusive floating system located under the waterproof fabric cover that contracts downwards on the instep of the liner as the dial is tightened, precisely controlling volume and fit. CARBON CORE - The F1 shell features a carbon core arch insert that adds significant strength and rigidity as well as torsional resistance to the boot. It wraps under the arch, and up on both sides of the boot reinforcing the cuff interface, interconnecting the cuff and shell with a lightweight yet strong junction, helping to increase impulse transmission to the skis without adding weight.

The standard-setting benchmark for lightweight touring performance, the F1 features a responsive, laterally stiff design and an incredible range of motion, as well as an Intuition liner, integrated RECCO reflector, and new tongue alignment extension on the shell. - Grilamid shell and cuff deliver lightweight performance - Carbon Core technology provides outstanding torsional rigidity - Fast buckle cuff closure provides quick transitions from up-to-down - Boa Fit System shell closure for a fast and secure fit - F1 manual ski/walk mechanism is quick and reliable - RECCO technology for added safety FEATURES: BOA FIT SYSTEM - The patented Boa Fit System consists of three integral parts: a micro-adjustable dial, super-strong lightweight laces, and low-friction lace guides. Each unique configuration is engineered for effortless precision delivering a connected, fast, customized, and durable fit, and is backed by The Boa Guarantee. The F1 LT system is an exclusive floating system located under the waterproof fabric cover that contracts downwards on the instep of the liner as the dial is tightened, precisely controlling volume and fit. CARBON CORE - The F1 shell features a carbon core arch insert that adds significant strength and rigidity as well as torsional resistance to the boot. It wraps under the arch, and up on both sides of the boot reinforcing the cuff interface, interconnecting the cuff and shell with a lightweight yet strong junction, helping to increase impulse transmission to the skis without adding weight.