S/Pro Delta S Boa 120 Ski Boots 2027
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Size chart
Men's Sizes:
| Mondo | US | UK | JP | FR | DE |
|---|---|---|---|---|---|
| 24.5 | 6.5 | 6 | 24.5 | 39.23 | 6 |
| 25.0 | 7 | 6.5 | 25.0 | 40.13 | 6.5 |
| 26.0 | 8 | 7.5 | 26.0 | 41 | 7.5 |
| 26.5 | 8.5 | 8 | 26.5 | 42 | 8 |
| 27.0 | 9 | 8.5 | 27.0 | 42.23 | 8.5 |
| 27.5 | 9.5 | 9 | 27.5 | 43.13 | 9 |
| 28.0 | 10 | 9.5 | 28.0 | 44 | 9.5 |
| 28.5 | 10.5 | 10 | 28.5 | 45 | 10 |
| 29.5 | 11.5 | 11 | 29.5 | 45.23 | 11 |
| 30.0 | 12 | 11.5 | 30.0 | 46.13 | 11.5 |
Women's Sizes:
| Mondo | US | UK | JP | FR | DE |
|---|---|---|---|---|---|
| 21.5 | 4 | 2.5 | 21.5 | 35 | 3.5 |
| 22.5 | 5.5 | 4 | 22.5 | 36.23 | 4 |
| 23.0 | 6 | 4.5 | 23.0 | 37.13 | 4.5 |
| 23.5 | 6.5 | 5 | 23.5 | 38 | 5 |
| 24.0 | 7 | 5.5 | 24.0 | 39 | 5.5 |
| 24.5 | 7.5 | 6 | 24.5 | 39.23 | 6 |
| 25.0 | 8 | 6.5 | 25.0 | 40.13 | 6.5 |
| 26.0 | 9 | 7.5 | 26.0 | 41 | 7.5 |
| 26.5 | 9.5 | 8 | 26.5 | 42 | 8 |
| 27.0 | 10 | 8.5 | 27.0 | 42.23 | 8.5 |
| 27.5 | 10.5 | 9 | 27.5 | 43.13 | 9 |
Youth Sizes:
| Mondo | US |
|---|---|
| 18 | K11 |
| 19 | K12 |
| 20 | K13 |
| 21 | 2 |
Quick Specs
| Series | S/PRO Delta |
| Flex | 120 |
| Forefoot Width | 102mm |
| Sizes | 24.0 – 31.5 (Mondo) |
| BOA® | Yes |
| Binding Compatibility | GripWalk (ISO 5355 premounted) |
Product Description
Built for skiers who demand high-performance precision without sacrificing forefoot comfort, the S/Pro Delta S Boa 120 brings Salomon's BOA® Fit System to a wide 102mm last for the first time. Shell-mounted micro-adjustment pairs with two aluminium buckles and a toolfree tooth rack for a locked-in, customizable hold. The three-position Calf Adjuster accommodates every leg shape without compromise. The go-to boot for powerful, wider-footed advanced skiers.
Product Details
| Fit Profile | Wide, 102mm last, designed for skiers with wider feet: secure and precise fit with forefoot room |
| Flex | 120 (stiff): high-performance flex for powerful, responsive carving |
| Shell | Polyurethane (PU) |
| Cuff | Polyurethane (PU) |
| Liner | My Customfit 4D Perf: Salomon's 4D liner family features a pre-shaped construction with cushier foams, an elastic toe box for forefoot room, and Talyn® fabric exterior for enhanced personalization; Perf variant |
| Footbed | Light Footbed |
| Closure System | BOA® Fit System (Shell-mounted, S BOA): single shell-mounted dial providing micro-adjustable, even tightening of the lower shell · 2 Screwed Aluminium Buckles: premium aluminium ratchet buckles for secure, precise upper closure · 1 Toolfree Tooth Rack: toolfree-adjustable ratchet at instep for quick on-snow fit tuning |
| Strap | Riveted Velcro 45mm |
| Cuff Adjustment | Riveted Cuff Alignment Pivot · 3-position Calf Adjuster for higher and wider calf perimeter capacity, fitting varied leg shapes quickly |
| Sole / Binding Compatibility | GripWalk premounted ISO 5355: GripWalk sole norm for improved walking comfort, compatible with standard alpine DIN bindings |
| Weight | 1935g (one boot) |
S/Pro Delta S Boa 120 Ski Boots 2027 FAQ
I have wide feet — is the Delta S BOA 120 actually built for that?
Yes, the S/Pro Delta S BOA 120 is specifically designed for wider feet with a 102mm last, the widest in the S/PRO alpine lineup. It's the boot Salomon built to bring precise BOA fit to skiers who've historically struggled with narrow racing-shaped shells. That extra 2mm over the Supra (100mm) makes a real difference in forefoot comfort.
What does the BOA dial actually do on a ski boot?
On the S/Pro Delta S BOA 120, the BOA Fit System is mounted on the lower shell. Turning the dial tightens a micro-adjustable cable that wraps the foot for a precise, even hold without pressure spikes. It works alongside 2 aluminum buckles and a toolfree tooth rack, giving you multiple tightening zones you can fine-tune throughout the day.
What flex is 120 — is it too stiff for an intermediate skier?
A flex of 120 is in the firm-to-advanced range. The S/Pro Delta S BOA 120 is best suited for confident intermediate to advanced skiers who generate enough speed and force to push the boot and feel the response. Lighter or less aggressive skiers may find a 100 flex more comfortable and easier to use all day.
My calves are wide — will the cuff close properly?
The S/Pro Delta S BOA 120 includes a 3-position Calf Adjuster, which lets you expand the cuff opening to accommodate different calf widths. That's a useful feature for skiers who find most boots pinch or gap at the top of the cuff.
Will these boots work with my existing bindings?
The S/Pro Delta S BOA 120 ships with GripWalk soles premounted (ISO 23223), compatible with GripWalk-certified bindings. The sole is also ISO 5355 alpine norm compatible. If your bindings are not GripWalk-certified, confirm compatibility with a tech before mounting.
What sizes are available?
The S/Pro Delta S BOA 120 comes in sizes 24.0 to 31.5 Mondopoint. Mondopoint corresponds to your foot length in centimeters. One boot weighs 1935 g at reference size, which is typical for a performance alpine boot at this flex and feature level.