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Smith Summit MIPS Ski Helmet Review

Matt Leitzinger (bio photo)
Saray Tory bio photo
ByMultiple Authors
Feb 16, 2025
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Our Take:
4/5
The Smith Summit MIPS ($235) is a backcountry specialist: It’s light yet surprisingly tough, extremely breathable, and certified for both skiing and mountaineering. Smith’s designers clearly did their homework on touring-specific features, and we were particularly impressed with the Summit’s collapsible fit-adjustment system and integrated cord loops that make it easy to carry on the rear of a pack. The Summit’s specialized design does have its downsides—it offers essentially zero warmth and the barely-there padding doesn’t grant much comfort—but its thoughtful feature set shines on long ski tours and ski mountaineering missions.
Comfort

Comfort

3/5
Warmth

Warmth

1/5
Ventilation

Ventilation

5/5
Weight & Bulk

Weight & Bulk

4.5/5
Durability

Durability

3.5/5
Sustainability

Sustainability

3/5

Weight

1 lb.

Construction

Hybrid in-mold

Vents

33 (fixed)

MIPS

Yes

Pros

Dialed feature set for touring, including a foldable fit system, headlamp attachment, and pack tie-downs.
The lightweight and impressively packable design makes it a standout for backcountry adventures of all kinds.
Openings dotting the shell create excellent ventilation.

Cons

No ear pads or interior lining means you’ll want a different helmet for resort days.
Spendy for a specialized piece of gear.

For this season's top lids, see our guide to the Best Ski Helmets.

When considering the Smith Summit MIPS's comfort level, you have to place it in the context of both traditional ski helmets as well as the climbing helmets that many ski mountaineers wear. Compared to the former, the Summit’s design and cushioning are very bare-bones: It has much less padding than a traditional resort-oriented model such as Smith’s Level. Inside, the Summit has one cushioned strip that rests against your forehead and two more along the top of your skull. These strips help isolate your head from the MIPS liner and wick away sweat, but they don’t do much more in terms of adding softness and warmth. For that, you’ll want to wear a beanie (the Summit is actually designed to be worn over a beanie). But the lack of a liner comes with the benefit of weight-savings and breathability, two of the Summit’s main goals.

Like a climbing helmet, the Smith Summit MIPS is lightweight and unobtrusive; to that end, it’s primed for all-day wear. I’m used to wearing a climbing helmet for long hours when on missions that take me through technical, steep terrain such as rocky couloirs and volcanos that have a tendency to rain down choss without warning, and this lid is tailor-made for those outings. It’s actually more comfortable than many of the climbing helmets that I’ve worn, which utilize a rigid plastic ratcheting track to adjust the fit. Instead, the Summit’s Boa adjustment system and the harness that houses it are extremely flexible and supple, which results in fewer pressure points and a more form-fitting feel. Add in the fact that this helmet is certified for alpine skiing, and it’s an easy choice over a normal climbing helmet.

The Summit is designed to maximize airflow when you’re slogging up a couloir, so it’s not the best ski helmet to wear standalone on a cold day. It has a ton of uncloseable vents (more on that below), but the real issue in the warmth department is its lack of a liner and ear flaps. I tested the Summit during a cold winter in the Pacific Northwest when temps were often in the low teens, and even around freezing level it had me reaching for a beanie in addition to my usual under-helmet ballcap. Even on most spring descents, I found myself wearing a cap and Buff to keep fast-moving air from freezing my ears. In that sense, the Summit is definitely not the right choice for face-shot deep-winter pow days.

Thanks to a whopping 33 uncloseable vents spread around its top and back, the Summit is extremely well-ventilated. Its design places it closer to an airy climbing helmet than its less-breathable ski helmet cousins. For instance, I’ve skied for years with the Black Diamond Vapor and the Summit equals that foam lid’s ventilation, while offering considerably more protection thanks to its hybrid in-mold construction that places a hard ABS shell up top. The perforations throughout the top of the shell act as windows to the zones of Koroyd, a material that resembles bundles of coffee straws and allows airflow where similarly absorptive foam would block it. (Koroyd also helps absorb impacts, granting another level of protection in addition to the MIPS.) 


There are larger vents around the crown of the head that align with larger ports in the foam of these areas, along with huge apertures around the back-of-the-head region that vent hot air out the back. In addition, the Summit features vents at the front of the helmet that align with the goggle-top vents found on many goggle models—including Smith’s—to help dump heat through the helmet rather than recycling it back into the goggle, which causes the dreaded fog. In this respect, the Summit falls in line with ski-helmet tech, while many climbing-oriented helmets don’t integrate as well with ski goggles.


All said, the Summit breathes better than any ski helmet I’ve ever worn. On one long spring couloir-hunting tour, it stayed on my head for a good portion of the day, including hours of exposed climbing and skiing. Throughout even the highest-output moments of booting up steep snow, I found the airflow to be more than sufficient to keep me cool.

I never felt burdened by the Summit, even after long hours of wear. While it’s not the lightest touring model out there—Sweet Protection’s analogous Ascender MIPS weighs 15.1 ounces, and a climbing helmet such as the Black Diamond Vapor is a mere 6.4 ounces—it’s still minimalist enough for climbing volcanoes and couloirs. Because I sized up to a large to fit a wide range of headwear underneath, the Summit felt and looked slightly bubbled-headed on me despite its low profile. Even so, it wears and feels much more like a light foam climbing helmet than a ski helmet designed for high speeds and hard impacts.

Usually, I find that helmets degrade because of wear to their adjustment system, deterioration of the liner, and superficial damage to the shell (often simply because it gets bashed around on the back of my pack while I carry it). However, the simple and flexible nature of the Summit’s Boa system means it’ll bend before shearing. There’s no liner to wear down either, and the Summit’s hard ABS topshell has proven to be more resistant to denting, scratching, and damage than most helmets I've used. The softer plastic on the sides of the helmet seems potentially more susceptible to damage, but those regions see less exposure to pack drops and knocks. Barring an errant rock, the Smith Summit MIPS should be able to accompany me on many spring ski mountaineering missions.

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Longevity

Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.

MIPS Liner
MIPS (Multi-directional Impact Protection System) has become the industry standard for protecting your head—and thus, your brain—from angled impacts. The system consists of a plastic layer on the interior of the shell (in the Summit it’s exposed, but in other ski helmets, it hides behind a liner) that’s designed to move independently of your head during a crash. This helps to reduce the forces transmitted to your head in the event of a fall.

Koroyd
This semi-rigid, honeycomb-shaped material acts as a crumple zone, absorbing impacts to impart an extra layer of protection. The Summit has Koroyd underneath the top of its ABS shell.

Adjustment System
Unlike the rigid Boa systems found on many ski helmets, the Summit’s version provides a soft and supple grasp around your head thanks to the fabric structure that houses the dial and grips the back-of-the-head region. The adjustment cable is pliable as well, allowing it to accommodate many head shapes and headwear combinations. The dial is easy to operate even with a heavy glove and has enough range of adjustment to fit everything from a thick wool hat to a bare head. The system makes it easy to fine-tune the fit, click by click, and is quick to release. Finally, in a nice touch, the fabric Boa adjuster packs away neatly when you’re not wearing the helmet.

Headlamp Clips and Stowage Loops
The Summit, like many climbing helmets, includes clips that retain a headlamp for alpine starts. It also has a fairly unique feature: A set of cord loops designed to integrate with the side-cinch/A-frame straps of a backpack to allow for a clean carry on the rear panel of a pack that doesn’t have a designated helmet hammock. The straps are a clever inclusion, and I used them frequently to tote the Summit on approaches.

Lack of Goggle Clips
Unfortunately, the minimalist Summit does not include a goggle retention system as many traditional ski helmets do. This increases the chances of losing your ski goggles in a tumble or when its strap simply wanders up and off the helmet.

Smith sells the Summit MIPS in four sizes, unisex small to XL. My head circumference is 23 inches and is fairly narrow, so I tend to fit better in slimmer Giro helmets rather than Smith’s usually more rounded models. I also wear size large helmets to accommodate ballcaps or beanies underneath, either for extra warmth or as a shield against sun and snow. I tested the Smith Summit MIPS in a size large for those same reasons and found the extra room for warmth necessary.

The wide range of the Summit’s Boa adjustment system allowed me to fit the helmet around even a thick beanie for cold days while still cinching down nicely over lower-profile headwear. In the case of a bare head or a low-volume beanie, the Boa was nearly maxed out and made the shell feel a bit wobbly and separated from my head.

Salomon Mtn Lab ($290): The Backcountry OG
Salomon’s Mtn Lab was the first ski helmet to really break through in the backcountry space and remains a solid option. Weighing less than the Summit at 14.1 ounces, the Mtn Lab also includes a merino wool liner and ear pads for additional warmth. In addition, huge cutouts in the shell promote unimpeded airflow, although they also readily let in snow and wind. Both helmets are quality options, but the Summit is the more modern design with its MIPS liner, Koroyd tech, and functional features like the foldaway fit system. Unless you want the Mtn Lab’s liner and ear cushioning, we give the advantage to the Summit. For more, read our Salomon Mtn Lab review.

Pret Cynic X2 ($160): Versatility on a Budget
The Cynic X2 is light enough for backcountry use—at 15.8 ounces in a size medium, it weighs a smidge less than the Summit—but it’s less specialized for technical tours. With an in-mold construction, it can’t match the Summit’s protective ABS top, and this helmet isn’t certified for mountaineering. For days spent in the backcountry or ripping resort laps, its removable ear flaps and always-open vents (though there are far fewer of them) give you the flexibility to toggle between warm and airy, but the Summit is much less bulky and breathes better. The Cynic X2 also has MIPS protection, although it lacks the Summit’s Koroyd bulwark. However, we prefer its magnetic chin buckle to the Summit’s standard buckle, and the Cynic X2 is significantly cheaper, too. To learn more, see our review of the Cynic X2.

Smith Summit MIPS ($260)
Bootpacking up couloir in Smith Summit MIPS Ski Helmet
4/5

Certified for skiing and mountaineering and with an exceptionally light, packable build, this helmet is a backcountry specialist. It’s our current favorite for big days touring and ski mountaineering, but its minimalist build is out of place at the resort.

Weight
1 lb.
Construction
Hybrid in-mold
Vents
33 (fixed)
MIPS
Yes
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Comfort

3/5
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Warmth

1/5
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Ventilation

5/5
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Weight & Bulk

4.5/5
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Durability

3.5/5
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Sustainability

3/5
Salomon Mtn Lab ($290)
Front vents on the Salomon Mtn Lab ski helmet
3.9/5

One of the first backcountry-focused ski helmets, the Mtn Lab is still a stalwart of the category. It prioritizes ventilation and low weight over plushness and warmth, yet still offers a level of comfort and versatility not often seen among touring lids. With triple certification, it can also be worn for biking and climbing.

Weight
14.1 oz.
Construction
In-mold
Vents
12 (fixed)
MIPS
No
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Comfort

3.5/5
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Warmth

1.5/5
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Ventilation

4.5/5
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Weight & Bulk

5/5
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Durability

2/5
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Sustainability

4.5/5
Pret Cynic X2 ($160)
Holding Pret Cynic X2 ski helmet in snowstorm
4.2/5

The Cynic X2 stands out as a high-value model among helmets in the mid-$100 price range. It nails many key components, including all-day comfort, a sleek design, and industry-standard protection, but you won’t find the premium airflow and features of more expensive competitors.

Weight
15.8 oz.
Construction
In-mold
Vents
12 (fixed)
MIPS
Yes
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Comfort

4/5
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Warmth

3/5
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Ventilation

3.5/5
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Weight & Bulk

4/5
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Durability

3/5
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Sustainability

0/5

Is the Smith Summit for You?

The Smith Summit's sleek silhouette belies its feature-packed design. This ski helmet is packed full of details that make it arguably the best backcountry-specific model you can buy today. It’s about as protective as a light, touring-oriented helmet gets—against both rockfall and ski crashes—and its breathability is a huge advantage on warm spring days when you’re trying to move fast in the mountains. The Summit’s price is probably a bit high for casual ski tourers, but if your late-season ski kit frequently includes an ice axe and crampons, this helmet is worth every cent.

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