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  • Smith - I/O Interchangeable Goggle -
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  • Smith - I/O Interchangeable Goggle -

Smith I/O Interchangeable Goggle

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116 Reviews


Got to be good-looking because it's so hard to see.

Smith combined sleek styling with its easy-to-use quick release system to make the I/O Interchangeable Goggle your go-to all-season goggle. Smith uses its Vaporator lens technology on the I/O to keep fog off your lenses for crystal clear sight on the mountain.

Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.

  • Medium fit for Medium faces
  • Quick release lens system for easy changes with no scratches
  • Spherical Carbonic-X Lens for clear, distortion-free optics
  • QuickFit Strap Adjustment system makes it easy to fix the fit on the fly
  • Ultra-wide silicone backed strap is comfortable and won't slip off your helmet
  • Triple-layer UltraWix foam for all-day comfort and moisture management
  • Includes microfiber goggle bag with replacement lens sleeve
  • Item #SMI0901

Tech Specs

spherical Carbonic-X
Interchangeable Lens
Face Size
QuickFit with clip buckle, silicon beaded
Case Included
yes, microfiber bag
Recommended Use
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Great goggs

  • Familiarity: I've put it through the wringer

I have had my i/o's for a few years now. I regularly swap the lenses depending on the light. They are super easy to swap out. The mirror lenses I have are not holding their film well which Smith will back with their warranty. I have a pretty large head and these offer good coverage.

Great goggs


  • Familiarity: I've put it through the wringer

Two seasons of hard riding and they still look brand new. The lenses provide a very wide, very clear, distortion-free view, and the foam and strap are perfectly comfortable (both directly on your head or on a helmet). They ventilate well––never had any fogging issues––and they can take a hit. In sum, yes, these goggles are expensive, but you get what you pay for, and if you get them on sale, you're getting a great deal on a set of goggles that will last you many, many seasons to come.

Clear eyes, empty wallet

  • Familiarity: I've put it through the wringer

These things are great! The fit is superb and the field of vision is pretty amazing compared to a traditional framed goggle. I switched to the frameless I/O goggle back when it first came out in 2009 or 2010, I don't even remember and haven't looked back since. The quality is pretty amazing as well, as I have had the same googles now for about 5 years now... Changing the lenses on these things are a snap and takes about 5 seconds - just flip up two tabs and pull the lens up from the bottom. To replace, put the new lens in how the old one came out and then close the tabs and voila! You just changed your lens. Smith offers a huge variety of lenses for just about any light condition that you will encounter and when you make the mistake of throwing your helmet with the goggles still on it in the back of your truck and let it bang around, a new replacement lens is WAY cheaper than a new pair of goggles. They do an amazing job at not fogging either, which is something that Smith has been known for for years. With so many varying face sizes, Smith seems to have it covered with their I/O line. From small faces to just larger oversized eye protectors, they have something for everyone.

Clear eyes, empty wallet

Bread and butter

    Just as everyone else and their mother thinks, I/O's are the most versatile classic goggle for all winter enthusiasts. They fit incredible with all of smith's helmets, and have a nice curved shape that fits nicely with most other brands. I have been wearing I/O's for three seasons now and have no intentions of changing. The lens changing mechanism is fast and easy so you can always adapt. Awesome goggle!

    What they said.

    • Familiarity: I've put it through the wringer

    Not sure what's left to say about these goggles that the other 87 5-star reviews didn't touch on. These goggles are fantastic, plain and simple. Easy lens swaps, awesome designs, and perfect for smaller faces. I had the I/OS for a few years before switching to these, and I'm really glad I did. They don't squeeze my face as much and have a huge field of vision. 100% satisfied. Pretty sure I'll be getting another pair of these when the time comes.

    Still the best goggles on the market

    • Familiarity: I've put it through the wringer

    About 8 years ago I picked up a pair of I/Os when they first came out and they were game changers then. Crazy fog resistance. Very comfortable. Easy to swap lenses. And durable. Finally after many years with lots of hard skiing, the foam ripped on top, and I had to get new ones.

    I tried the I/O7 as it was a new revamped version, but didn't like them. The lens was bigger so it pushed my helmet up, but the inside of the frame is the same size as the I/O so there isn't any noticeable increase in field of view. I went back to the original I/O and couldn't be happier. This design is still the best you can buy. The lenses resist fogging and clear any moisture that does develop quicker than anything else I have tried. The fit/size offers the perfect balance is field of view and comfort. I really like the lens changing system. Simple and effective. If you are thinking about these goggles, buy them. You won't be disappointed.

    Few Problems to Address, Not the Best

    • Familiarity: I've used it several times

    I'm not sure why people rave about these goggles. I own 3 other goggles (Oakley Canopy, Dragon APXs, and Scott LCG) and they all outperform the I/O by far.
    Some people are comparing these goggle to 50 bucks goggles, and for sure they will find a huge difference!

    Here's an objective review after several uses:

    These goggle are in fact perfect for smaller face, but they look somewhat off when coupled with a helmet. I found these goggles to be much more stylish over a beanie.
    I'm also not so sure why Smith are keeping this product after launching the I/0 7 last year, along with the existing I/0X and S.

    To keep it short:


    -Fits well on smaller faces
    -Looks good
    -Super easy interchangeable lens
    -Great Quick release strap


    -Lens gets scratched easily (I received mine with the blue sensor mirror with a small scratch right out of the box). Changed to the Red SolX Mirror and it got scratches after 1 day on the slopes... knowing that I take care of my gear.
    -Limited field of view from all sides... Had to take a guess every time I reached for the chest pocket on my jacket.
    -Fogged from day 1
    -Foam padding is not very comfortable on my face.

    Few Problems to Address, Not the Best

    Versatile, Fog-free Performance

    Seriously, why would you buy any other goggle? The Smith I/O family of goggles absolutely kill it on the mountain. Switching lenses is super quick and easy, they don't fog, and the clarity is unmatched. Pair it with a Smith helmet(Vantage in this pic) for seamless integration. Lens pictured is the Red Sensor which is great on overcast days.

    Versatile, Fog-free Performance

    Can't go wrong with the I/O

    • Familiarity: I've put it through the wringer

    This is my second pair of I/Os and I'm not so sure I won't go for a third. The lenses take no more than 20 seconds to swap out. The minor ventilation adjustments that have been made have made a world of difference. I haven't fogged up once with these bad boys. I think these fit generally a little smaller in the face compared to other goggles, so if you want a large goggle go with the I/O X.


    • Familiarity: I've put it through the wringer

    I hate to say this, I've skied many Smiths, maybe it's the shape of my face=narrow, but my I/O's leak cold wind onto my eyes. It leaks outside air/wind between the lens and the frame, where the lens overlays the frame with no insert channel. the intentional venting is through the frame itself. probably has to do with how the frame is flexing on my face. Phenom's do not have this issue. price to be paid for that minimal overlay look and quick lens changes. also, I must say, the frame does not protect the lens from impact or scratching as well as some more classic designs, again: Phenom. instead of quick change lens, I'm still going with having two pairs: storm and mixed/sun.

    No Fog, No Problem

    • Familiarity: I've put it through the wringer

    These goggles have completely changed my shredding game. I was using some old Oakley A Frames for as long as I can remember, and when I switched to these, it was a whole new world. The peripherals on these goggles are amazing, you can seriously see everything around you. The lenses are pretty easy to interchange (definitely could be easier.. but not a huge deal) and there are SO MANY lens options for all the different types of days imaginable! They fit the face very comfortably, and they look amazing while doing so. I wouldn't recommend any goggle higher.

    Used I/Os for 4 season now- won't go back. They definitely work the best with smith helmets, but even with my ancient POC beater helmet, they still kill it!

    No Fog, No Problem

    Perfect for the smaller face

    • Familiarity: I've put it through the wringer

    I've been wearing these goggles for years, by far my favorite. I don't like wearing women's specific goggles because I feel the frames are too short and narrow. These goggles are small enough to fit my face and not too big so I don't look bug eyed. They never fog if you wear and care for them properly!

    Great Goggle

    • Familiarity: I've used it several times

    I bought these for the new ski season, and they have performed pretty well so far! This my first interchangeable lens goggle and I like it so far. The lens is easy to change and stays put. I haven't had much of a problem with fogging, only a tiny bit when the gaiter I use gets over my nose, and even then its a tiny bit and I just pull the mask off my nose and it goes away. My only complaint is that the goggle leaves a pretty good mark around my face when I take them off. It seems the padding isn't the softest around, but I guess I'm already pretty ugly, so it doesn't really matter! I wear them under my helmet (yes I'm that guy) and they are comfortable. Great goggle!

    Sick Goggles!

    • Familiarity: I've put it through the wringer

    Im going on my 4th year with these goggles and its so hard to let them go! with the wide range of lenses these goggles can be everything from your blue bird park goggles, to your low light pow/night skiing goggles! Not to mention i don't feel like i'm going out of my way when i need to change my lens because of how easy the lens's can pop in and out, yet they're sturdy and can take a hit! if you want a goggle that will hold for years, i HIGHLY recommend these!

    Looking Fly

    • Familiarity: I've used it several times

    Have worn Dragon goggles and the past and enjoyed them, however these Smith's are taking over as my go to. Not only are they super stylish but they fit amazing and are easily adjusted.

    I went with a mirrored green lense for the dark days and the bonus lense they sent me was a clear red lense for those dark days. 5X anti fog is gonna keep you scouting those fresh lines for days.

    This was an easy buy since I received the bonus lense, can't wait to crush the deep with these!

    for White/igonitor mirror/red sensor mirror mode, can I ask for changing the red sensor mirror to blue sensor mirror?

    Does the navy archive model come with two lenses? And if so which ones are they? I can't find a VLT for the lens? Thanks for any help!

    I am thinking of buying the Distruption/green sol x mirror/red sensor mirror goggles does that mean i would get the green sol x lenses as well as the red sensor mirror lenses

    what is the difference between the blue sensor mirror and the gold sensor mirror? I've heard the blue doesn't add much detail and I was wondering if the gold sensor is better or even the yellow sensor, but I know the gold sensor is vlt 70%

    The blue sensor and gold sensor are both rated for 70% VLT! The red sensor is rated at 60% and the regular sensor 65%.

    The gold sensor has a light rose base lens tint with a multi-layer gold sensor mirror which enhances color definition and increases depth perception in varying levels of low-light conditions.

    The blue sensor has a light rose base lens tint with a multi-layer mirror which maximizes color definition and increases depth perception in varying levels of flat light conditions.

    Bottom line, the base tint is the same light rose on any sensor lens but with slight variations in mirror coating. A lot of people have their preferences based on aesthetics, etc, but they are all awesome for flat light conditions. I really like all of them - actually the red sensor is my favorite. Those warmer colors (rose base + yellow or red coating) are nice for grey days - add a little contrast to that grey scale weather. But 70% VLT really brightens things up so you can't go wrong either way!

    what is the best lenses for the i/o .for snowy and really cloudy weather

    Hey Kim,

    For low light conditions, you'll want a lens with a high VLT (visible light transmission). Any of the Sensor lenses would be awesome - Blue Sensor 70% VLT, Red Sensor 60% VLT, or the Yellow Sensor 65% VLT.

    Do this google go good together with POC...

    Do this google go good together with POC Fornix small size helmet?

    Hi What size Smith I/O goggle works best...

    Hi What size Smith I/O goggle works best with the Smith Variant helmet (medium size) My face size would probably be medium to large? Thanks

    Best Answer

    The I/O sounds like it would be perfect. This goggle is meant for medium to large faces, the I/O X is bigger and will provide more peripheral but, it might not fit the best. The I/O S is for small to medium faces, I would say if your in the middle of the range go with this. If you are worried buy both the I/O and I/O X we will provide you free shipping to get a pair back to us as long as they are new.

    Does this come with an extra lens? The...

    Does this come with an extra lens? The Sage version states it does but I don't see much for info regarding that on this I/O.

    What lenses does the mission lime color...

    What lenses does the mission lime color come with?

    I'm planning to buy these goggles probably...

    I'm planning to buy these goggles probably because of its really cool look. Will it fit over the glasses? I'm doubting a little.

    How interchangable are the current I/O...

    How interchangable are the current I/O frames with older I/O lenses? I have a 4 year old pair with plenty of miles and foam that has finally totally separated. Can I use the older lenses with a new frame?

    What are the differences between all the...

    What are the differences between all the different lenses?

    There are different lenses based on the light conditions. The Smith site has a page dedicated to their lenses; there's a lens selector feature that will help you select the lenses based on your needs. (Goggles that come with a pair of lenses usually include one low-light or flat-light lens and one full-sun lens.)


    what means that the extra lens is discontinued?...

    what means that the extra lens is discontinued? the product bring only one?


    The description says this is for medium...

    The description says this is for medium faces. Anyone know what might work well for a large face?

    What is the best lens color combination...

    What is the best lens color combination with the IO?

    Thanks Chris

    Personally I went with the Green SolX with blue sensor. I really like the blue sensor for storm days and the green for partly cloudy-sunny days. I find the contrast these colors have add more definition to the snow. I will likely purchase a gold ignitor to have an extra spare on storm days in case of fogging.

    is there a smith equivalent of a yellow...

    is there a smith equivalent of a yellow lenses?

    Do these lenses have the new 5X anti-fog...

    Do these lenses have the new 5X anti-fog coating?