W's F1 LT
Free shipping over $100. Free return shipping except oversized items.
Pickup available at 415 North Lake Boulevard
Usually ready in 24 hours
W's F1 LT
23
415 North Lake Boulevard
415 North Lake Boulevard
Tahoe City CA 96145
United States
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Shipping & Returns
- Items ship in 3 days or less.
- We do not ship anywhere outside of the contiguous US.
- 10 day return policy. Free return shipping.
- Items must be unused, and in their original packaging with tags to be eligible for return or exchange.
- There are no returns on sale items.
Click here for our Shipping and Return Policies
- Best Use Ultralight Backcountry
- Last 100mm
- Claimed Weight (Single Boot) 930g (27)
- Sole Scarpa Vibram® UFO RS
Features
Combining ultralight elements of our Alien race boots with a more versatile, backcountry-oriented design, the all-new F1 LT WOMAN'S is our lightest weight, womens-specific alpine touring boot, optimized for high-mileage missions, ambitious traverses, and technical ski mountaineering descents. The Carbon Grilamid® shell and gender specific cuff provide a strong yet superlight construction, with a massive 72 degree cuff range of motion that increases agility and reduces fatigue. The Intuition liner is tailored for women, setting the standard for thermo-formable fit, warmth and comfort. The category-defying F1 LT W's redefines what's possible in the backcountry.
- 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 Sytem: Dial in the perfect fit with out 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.
- 3D Lamda 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.
- Cuff : Carbon Grilamid® LFT.
- Ski/Walk Mode : Speed Lock LT.
- Closure : 1 Buckle + BOA® Fit System.
- Binding System : TLT.
- Optimized Touring Pivot : 1mm.
Technical Specs
| Best Use | Ultralight Backcountry |
|---|---|
| Gender | Women's |
| Claimed Weight (Single Boot) | 930g (27) |
| Last | 100mm |
| Boot Flex | 100 |
| Shell Design | 3-piece |
| Shell Material | Carbon Grilamid® LFT |
| Buckles | 1 |
| Sole | Scarpa Vibram® UFO RS |
| Binding Compatibility | Tech |
| Liner | SCARPA® Tour LT Women's |
| Forward Lean | 9° | 11° | 13° +/- 2° |
| Warranty | 1 Year Limited |
Shipping & Returns
We offer free shipping on orders over $100. Most orders ship within 3 days or less.
Returns are accepted within 10 days of purchase, or within 10 days of receiving your online order. Items must be unused, with original tags attached and in original packaging.
Sale items, climbing and mountaineering gear, avalanche safety equipment, and demo gear are final sale and not eligible for return.
Need help? Email info@alpenglowsports.com or call (530) 583-6917.
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AI FAQs
AI generated FAQs about the W's F1 LT
How do I know what size to order?
These boots are offered in sizes 23/23.5 through 27/27.5. Their medium 99–101 mm last provides the fit platform to consider alongside your usual ski-boot sizing.
Are these boots narrow, wide, or standard in the forefoot?
These boots use a medium 99–101 mm last, with a stated 100 mm last measurement. That places the forefoot fit in the medium range rather than a specifically narrow or wide design.
Can I adjust how snug these boots fit around my ankle and calf?
You can fine-tune the fit with the floating BOA® Fit System, which lets you dial in precise tension around the ankle with no pressure points, plus one buckle and a wide hook-and-loop strap for the upper cuff. This combination lets you snug down the ankle and calf independently, so you get a secure, custom fit whether you're climbing in walk mode or locked in for the descent.
Can I walk comfortably in these boots, or are they stiff?
These boots have a 72° cuff range of motion and a Speed Lock LT ski/walk mode. That mobility is built for touring agility and reduced fatigue on high-mileage missions rather than a fixed downhill-only stance.
Do these boots have good ankle support, or will my feet roll around?
These boots pair a carbon-reinforced Carbon Grilamid® LFT shell and cuff with a 3D Lambda Frame for increased torsional rigidity, plus a 100 flex rating that locks your ankle in place rather than letting it roll. This stiffness and the secure BOA®, buckle, and strap closure are built for driving technical backcountry descents, though riders who want a stiffer, resort-oriented flex should note this is a lightweight touring boot rather than a stiff freeride boot.
Will these boots work with my current skis and bindings?
These boots use the TLT binding system and are compatible with Tech/TLT bindings. They are built for tech-binding alpine touring setups rather than bindings outside the stated Tech/TLT compatibility.
How well do these boots hold up to the repeated impact of skiing?
These boots use a stiff, strong Carbon Grilamid® LFT shell and cuff, plus a 3D Lambda Frame that increases strength and durability. The frame also adds torsional rigidity with minimal weight, supporting responsive downhill performance on technical ski-mountaineering descents.
Are these boots made for beginners, advanced skiers, or somewhere in between?
These boots are optimized for high-mileage backcountry touring, ambitious traverses, and technical ski mountaineering descents. Their ultralight, women’s-specific design is aimed at demanding backcountry objectives rather than a beginner-focused resort-boot role.
Will these boots support aggressive skiing, or are they better for casual runs?
These boots pair a 100 flex rating with a stiff Carbon Grilamid® LFT construction and a Speed Lock LT mechanism designed to be strong and reliable on the downhill. At 930g per boot, they are built for technical backcountry descents and ambitious traverses rather than for the sustained high-speed, aggressive resort skiing a heavier freeride boot delivers.
How much feedback and control will these boots give me?
The 3D Lambda Frame increases torsional rigidity and responsiveness, while the carbon-reinforced shell and cuff paired with a 100 flex rating stay stiff and strong at low weight. This gives you precise edge feedback on steep technical descents while keeping the boot light enough for long uphill travel, rather than the maximum damping of a heavier resort boot.