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Smith 4D Mag Review: Our Top-Rated Ski Goggle

Vivika Stamolis (gear tester)
Eli Bernstein bio photo
ByMultiple Authors

Updated:

Sep 22, 2025
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Our Take:
4.7/5

A powerhouse of a goggle design, Smith’s top-end 4D Mag ($348) checks pretty much every imaginable box: high-definition-like optics, a massive field of view, all-day comfort, easy lens swaps, and a complete feature set. Its innovative curved lens sets it apart in the market and delivers real-world benefits, but it’s hard not to balk at the price. That being said, for skiers who want the best of the best—this one’s it.

Optical Quality

Optical Quality

4.5/5
Field of View

Field of View

5/5
Lens-Change System

Lens-Change System

4.5/5
Comfort

Comfort

5/5
Ventilation

Ventilation

4/5
Sustainability

Sustainability

3.5/5

Fit

Medium

Lens Shape

Spherical, BirdsEye

Lenses Included

2

Additional Sizes

Small, large, low bridge

Pros

Market-leading field of view thanks to Smith’s innovative curved lens.
Smith’s ChromaPop lens tech offers standout definition and clarity; lots of lens color and VLT options.
Simple, fast, and secure magnetic lens-swap system.
Premium features abound; includes a hard-sided case

Cons

The most expensive mass-market goggle out there.
Distortion when looking down could be distracting for some.

For this season's top models, see our guide to the Best Ski Goggles.

Smith calls its proprietary lens tech ChromaPop, which has long held a place as one of the top entries on the market, along with Oakley’s Prizm and Anon’s Perceive lenses. My daily driver is the Smith Squad Mag (also with ChromaPop lenses), and my experience with the 4D Mag Goggle  matches my previous impression: ChromaPop delivers exceptionally crisp, high-contrast, and vibrant scenes. Visual clarity goes a long way towards improving your on-snow experience if light conditions are less than ideal, and the Smith 4D Mag can salvage a day on the slopes with flat light and swirling snow.


The Smith 4D Mag comes standard with two lenses—a sunny and a low-light version—and Smith offers an extensive array of lens options for purchase that range from 9% VLT (visible light transmission; a lower percentage means less light passes through the lens, while a higher percentage means more light is transmitted for visibility on cloudier days) to 89%. The pair I tested for this review came with a Sun Green Mirror lens (9% VLT) and a Storm Blue Sensor Mirror lens (55%). On a clear spring day spent skiing at Crystal Mountain in Washington, the Sun Green proved plenty dark enough to protect my eyes, yet still granted natural color depiction of my surroundings. Conversely, the Storm Blue excelled on cloudy days and in low light, with similarly great natural tones.


The only hiccup in the design is the aforementioned distortion at the bottom of the lens where it curves (described in “Field of View” below). But the fuzziness faded into the background pretty quickly, and I think it’s well worth the slight compromise in optical quality for the market-leading field of view.

If field of view is your top priority when purchasing a goggle, this is the model for you: Thanks to its unique, downward-curving lens design the Smith 4D Mag is the standard-bearer for unobstructed sightlines in a ski goggle. While the extended curve at the bottom of the lens can take a couple runs to get used to (admittedly, the slight distortion tripped me out a bit when I first put the goggle on), it didn’t take long for me to appreciate the expanded sightlines. At the end of the day, I found the distortion tradeoff to be an easy win since it opens up never-seen-before downward visibility.


The 4D Mag especially stands out if you frequently zip/unzip or reach into your jacket pockets, or if you’re a backcountry skier or rider who needs to fiddle with backpack straps. Being able to look down as you would naturally—without tilting your entire head or removing the goggle, as you might with other models—is a game-changer. And, while you might see a sliver of the frame when you look up and to the sides, that doesn’t change the fact that the 4D Mag excels at providing an unfettered view of your surroundings.

Like many top ski goggles, the Smith 4D Mag uses a magnet system to swap out its lenses (hence the name). Smith’s design is one of the simplest and most secure around: To release the lens you pull on a small but sturdy tab on each side of the frame, which unlocks the lens from the magnets. Then, simply insert the new lens (the magnets line it up in place) and reverse the process by closing the tabs. I was able to change lenses while wearing gloves, and I’m positive that with a little practice I could do it while wearing the goggles.


Smith’s magnet-and-lock system is just a hair more complicated than the one employed by Anon’s M series of goggles, which feature ultra-strong magnets (but no tabs) around the goggle frame. But the real-world difference in difficulty amounts to only a couple seconds, and the 4D Mag provides an impressive combo of simplicity and security. I also appreciated the fact that, unlike other, comparable lever-style systems such as the one found in Dragon goggles, I never had to worry about whether the 4D Mag’s lens was in place and flush against its frame.

At this price point a ski goggle should feel nothing less than pillowy, and that holds true with the 4D Mag. Its triple-layer foam is thick and soft with an effective moisture-wicking layer next to skin, and I didn’t experience any discomfort or chafing. You also get premium touches like a sculpted cutout in the foam at the nose, and the frame flexes easily to fit snugly on your face, prevent gaps, and block wind. Strap adjustment is easy with gloves on, and I was able to fine-tune the tightness even while I was wearing the 4D Mag on my helmet.


The fact that Smith also offers the 4D Mag in small and low nose bridge varieties also helps it receive top marks in this category. The most comfortable goggle is the one that fits best, and most users should be able to find a frame option that tailors the 4D Mag to their face shape.

Over the course of a warm spring day spent testing the Smith 4D Mag, the design quickly cleared away any fog even while I hiked up to Silver King in Crystal Mountain’s expansive lift-accessed backcountry. A high-quality anti-fog coating on the lens is partly responsible, as is the spherical lens shape (which keeps the lens further from your face) and generous venting along the top and sides of the goggle. The vents are covered with a thin layer of foam—it’s see-through if you put it up to the light—which allows for consistent air movement.


It’s worth noting that the 4D Mag’s curved lens design prevents venting directly beneath the goggle, which translates to ever-so-slightly less airflow than category leaders such as the Anon M5 or Julbo’s unique Lightyear and Launcher, which utilize a hinge-and-magnet system to create a gap between the lens and frame. (When our testing team did experience any light fogging with the 4D Mag, however, it was mostly because of user error such as overdressing.) Overall, this is a well-ventilated goggle that won’t leave you cursing the conditions as you struggle to see.

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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.

Hard-Sided Storage Case
The 4D Mag ships with a large, hard-sided case that holds both the frame and spare lens in dedicated compartments. While it’s probably too bulky to carry around in your pack, the well-built, zippered case is a thoughtful touch for packing the ski goggle away safely in storage or when you’re traveling.

Gogglesoc Lens Protector
In addition to the standard microfiber carrying pouch, Smith includes a fabric lens protector with the 4D Mag. Made by the company Gogglesoc, the stretchy cover slides onto the lens and holds fast thanks to elastic around the edges. We’re big fans of this small add-on, as you can quickly protect the goggle’s lens without taking it off your helmet. It’s the perfect solution for lunch breaks or other times you don’t want to reach inside your jacket for the carrying pouch. Plus, Smith ships the Googlesoc attached to your goggle in lieu of a plastic protector, so it cuts down on plastic packaging.

Smith describes the 4D Mag as having a medium fit, which I found to be accurate. I have a round face shape and frequently wear another Smith model, the Squad Mag, which has a slightly larger medium/large frame and fits me well. The Smith 4D Mag runs a little smaller than the Squad, but I had no complaints regarding fit. Paired with a Smith Vantage helmet in a size medium, the 4D Mag’s frame lined up perfectly with the helmet’s brim, with no gaps along the top or sides. To accommodate different face shapes and sizes, Smith also offers the 4D Mag in low nose bridge fit and XL and smaller versions.

Smith Squad Mag ($253): Drop the BirdsEye Lens and Save $
Smith’s Squad Mag is the most affordable option in the brand’s Mag lineup, saving you substantial coin compared with the 4D Mag. The major difference is field of view, as the Squad Mag’s cylindrical lens can’t match the wide-open views of the 4D (particularly looking straight down). And the 4D includes niceties like the hard-sided case. Still, the Squad Mag comes with ChromaPop lens tech and its laudable clarity, and features the same magnet-and-lock lens-swap system. Additionally, some will prefer the Squad’s framed look and slightly bigger medium/large fit. For more, see our in-depth Squad Mag review.

Anon M5 ($315): Class-Leading Lens-Swapping Tech
In the lens game, the 4D Mag and the Anon M5 are two outliers. The M5 has a flat toric lens shape, which combines the low profile of a cylindrical lens (which are flat on the vertical axis) with the slightly rounded shape of a traditional toric lens. The net effect is a clean and modern look, although the 4D outpaces it in field of view. Both are made with premium materials and feature excellent magnetic lens-change systems, although Anon’s all-magnetic design is ever-so-slightly easier than Smith’s. Fit-wise, the M5 is a bit larger (more of a medium/large frame), but we give the small edge in comfort to the 4D with its more flexible frame that conforms nicely to the face. You save a little with the M5, but it lacks the hard-sided case that comes with the 4D. For more, read our Anon M5 review.

Smith Preview ($208): 4D Vision, Lower Price
Both the 4D Mag and Preview feature Smith’s curved BirdsEye Vision lens, which dramatically improves downward visibility for tasks like adjusting a bib strap or grabbing a snack from a chest pocket. But while the optical concept is shared, the rest of the designs diverge. The 4D Mag is the premium option, with a magnetic lens-swap system, two high-quality ChromaPop lenses, and a flexible frame with plush triple-layer foam. The Preview cuts costs with a single lens and no quick-change system. If you want the benefits of curved optics at a friendlier price—and don’t need multiple lenses—the Preview is a compelling value. But for all-day resort skiers who want the best version of this lens tech, the 4D Mag is the real deal. For more, read our write-up on the Smith Preview.

Smith 4D Mag ($348)
Carving groomer in Smith 4D Mag Ski Goggles
4.7/5

Smith's 4D Mag is the best of the best when it comes to field of view. A unique curved lens delivers unimpeded visibility, and the rest of the features are equally impressive. But it comes with a huge price tag.

Fit
Medium
Lens Shape
Spherical, BirdsEye
Lenses Included
2
Additional Sizes
Small, large, low bridge
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Optical Quality

4.5/5
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Field of View

5/5
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Lens-Change System

4.5/5
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Comfort

5/5
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Ventilation

4/5
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Sustainability

3.5/5
Smith Squad Mag ($253)
Standing with ski poles in Smith Squad Mag Ski Goggle
4.5/5

Smith’s lowest-priced Mag is no slouch. The Squad features the same snappy lens-change system as the I/O and 4D models, a wide selection of premium ChromaPop lenses, and a comfy fit. The large cylindrical lens is a bit bulky, but the Squad’s retro styling and high-end build give it widespread appeal.

Fit
Medium/large
Lens Shape
Cylindrical
Lenses Included
2
Additional Sizes
Low bridge
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Optical Quality

5/5
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Field of View

3.5/5
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Lens-Change System

4.5/5
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Comfort

4.5/5
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Ventilation

4/5
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Sustainability

3.5/5
Anon M5 MFI ($315)
Anon M5 Ski Goggles side profile
4.6/5

The fifth iteration of Anon’s premier goggle line sticks to the brand’s strengths: super-fast magnetic lens-change system; high-end, durable build; and well-rounded optics. The lack of a hard-sided case and the included floppy mask are both misses, but the M5 is a strong contender at the tippy top of the goggle market.

Fit
Medium/large
Lens Shape
Flat toric
Lenses Included
2
Additional Sizes
Medium, low bridge
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Optical Quality

4.5/5
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Field of View

4/5
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Lens-Change System

5/5
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Comfort

5/5
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Ventilation

4.5/5
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Sustainability

3.1/5

Is the 4D Mag for You?

The Smith 4D Mag might be the most well-known ski goggle on the market these days, and for good reason. This is an absolute top-of-the-line model with a price tag to match, but you get what you pay for in terms of innovative tech, thoughtful design and features, and premium, long-lasting materials. Is it a goggle we’d recommend for someone just dabbling in the sport? No. At $348, it’ll set you back about as much as a pair of entry-level skis. But if you get out a lot and want the best-of-the-best in terms of field of view, optics, comfort, and features, the Smith 4D Mag reigns supreme.

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