Phaenom · Ski & Snowboard
fs 01 90 Ski Boot - 2025
$280.17
$876.15Save $595.98 (68%)
at Backcountry
Price Historylast 11 days
Low $280.17 · High $280.17. Hover the line to see each change.
Is this a good deal?
- The current price has held for 10 days.
- Across the 100 Ski & Snowboard deals we’re tracking right now, the median discount is 43% — this deal’s 68% off is well above that mark.
Based on prices we’ve recorded from Backcountry since September 2026, refreshed several times daily.
About this product
The Phaenom FS 01 90 is a 2025 all-mountain ski boot built for freeride and powder skiing, with a flex index of 90 and a 102mm last width that suits a range of foot shapes. Its hybrid cabrio/overlap construction blends the close fit and edge control of a traditional overlap design with the progressive flex characteristics of a 3-piece shell, made from TPU for durability and responsiveness. The patent-pending Phaenom strap delivers rebound and shock absorption through turns, improving power transmission and turn initiation precision. Forward lean is fully adjustable via three interchangeable flip-chip inserts, offering 13, 15, or 17 degrees to suit different skiing styles. The thermo-moldable liner, made from 50% recycled fabrics and closed with an elastic strap, provides a customized fit. Two aluminum buckles secure the shell, and GripWalk sole compatibility (ISO 23223) broadens binding options. Every component, from panels to buckles to screws, is designed for repairability and recyclability, extending the boot's usable life.
- Category
- Ski & Snowboard
- Brand
- Phaenom
- Material
- aluminum, TPU
- Color
- Black
- Size
- 23.0 23.0
- Flex
- 90
- Sole
- GripWalk
- Liner
- 50% recycled fabrics
- Buckles
- 2
- Activity
- all-mountain skiing, freeride skiing, powder skiing
- Last Width
- 102mm
What people are saying
Reviewers consistently praise the Phaenom FS 01 90 for its innovative hybrid cabrio/overlap construction, which delivers a progressive, lively flex with strong power transmission and shock absorption. The patent-pending elastic strap earns repeated mention for generating noticeable rebound through turns. The two-buckle simplicity, comfortable out-of-the-box feel, and exceptional build quality are also recurring highlights, with testers noting the boots feel stiffer and better made than their flex rating suggests. Sustainability credentials, including recycled materials and a fully modular, screw-together design for easy part replacement, are widely appreciated. The most common criticism centers on fit: the wide 102mm last suits average to wider feet well, but skiers with narrow or low-volume feet may find the boot sloppy and will likely need professional bootfitting or heat molding to get a proper fit.
Specifications
- Ski waist width
- 102 mm
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