Fit + Tech
Cortex 130 Zonal BOA® Men's Ski Boot 2027
Mondo 25.5 – 30.5
Men's
Flex 130 · Zonal BOA®
Find Your Fit
| Mondo | US Men's | UK | Euro |
|---|---|---|---|
| 25.5 | 7.5 | 7 | 40.5 |
| 26.5 | 8.5 | 8 | 42 |
| 27.5 | 9.5 | 9 | 43 |
| 28.5 | 10.5 | 10 | 44 |
| 29.5 | 11.5 | 11 | 45.5 |
| 30.5 | 12.5 | 12 | 47 |
Ski boots are sized in Mondo point (cm foot length) — primary measurement for ski boot fit. US Men's primary column with UK and Euro equivalents shown. 6 sizes from Mondo 25.5 through 30.5 in half-Mondo steps. Compatible with all standard alpine ski bindings (ISO 5355 / GripWalk soles).
Component Breakdown
All-New LV BOA® Lower Shell
All-new, purpose-built LV (Low Volume) BOA® lower shell — narrower last shape for skiers with narrower feet. Race-boot-level precision and direct energy transfer for advanced all-mountain charging.
Dual-Zone Upper Cuff BOA®
Dual-zone upper cuff BOA® configuration — independent upper and lower zones for fine-tuned fit and pressure distribution. Second BOA dial on the cuff (in addition to the lower shell BOA) for customizable ankle/calf hold.
Powerful Upper Cuff
Powerful upper cuff paired with the LV lower shell for a race-level fit that still has the forgiveness for all-day freeride charging. The Cortex Zonal 130 is "DJ-remixed" with freeride capabilities.
Elite Fit Liner
Elite Fit Liner — precise foot wrap and responsive energy transfer. Heat-moldable for custom fit — conforms to individual foot shape over time. Premium construction for the high-output skier.
GripWalk Outsole
GripWalk outsole provides safe and comfortable walking thanks to its curved rubber shape. Compatible with all GripWalk bindings (ISO 23223 standard) and traditional alpine bindings (ISO 5355) — versatile compatibility.
ISO 5355 Standard Compliance
ISO 5355 standard compliance — compatible with all traditional alpine ski bindings. The classic alpine boot sole geometry fits any ISO-compliant binding on the market.
Optimized for BOA® Fit System
Both the high-performance LV lower shell and powerful upper cuff are "designed to optimize the revolutionary BOA® Fit System" — purpose-built for the dialed wrap and micro-adjustability that BOA provides.
Best For: Freeride, Big Mountain, Powder, Speed
Per the page, the Cortex 130 Zonal BOA® is best for Freeride, Big Mountain, Powder, and Speed — "aggressive performance, effortless control" across the mountain's most demanding terrain.
Mounting & Compatibility
- Compatible with all ISO 5355 alpine ski bindings
- Compatible with all GripWalk (ISO 23223) bindings
- Standard 30mm ski boot hole pattern — fits all alpine bindings
- DIN setting range: typically 4-14 for this flex (check binding specs)
- Forward lean adjustable via rear spoiler (check manual)
In the Box
- 1× K2 Cortex 130 Zonal BOA® ski boot (left or right, Mondo size as ordered)
- 1× Boot bag / storage sack
- BOA® laces installed (Zonal — 2 dials for lower shell + upper cuff)
- GripWalk sole pads pre-installed
Rider Profile
Flex Rating
Best For
Freeride, Big Mountain, Powder, Speed
Skill Level
Advanced – Expert
Fit System
Zonal BOA®
Aggressive Performance, Effortless Control — All-new LV BOA® lower shell + dual-zone upper cuff BOA® + Elite Fit Liner — "your favorite race boots from your glory days just got DJ-remixed with your freeride hit list."
Prepared with intention.
Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.
Passion drives us
At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.
