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  • Smith - I/O X Interchangeable Goggle -

Smith I/O X Interchangeable Goggle

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100 Reviews


Limits are made for pushing.

The Smith I/O X Interchangeable Goggles push the limits of what goggles can do. Huge peripherals and fog-free vision are packed in with unique space-age style. When you're dropping from the summit, these techy lenses auto-adapt to altitude changes to stop fog ups. Plus, when you're chatting up that hot thing at the midway bar, the I/O X are sure to mesmerize.

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.

  • Seamless helmet integration makes your helmet and your goggles one streamlined unit
  • Spherical Carbonic-X lens with TLT optics are individually molded to offer you a clear, distortion-free view
  • Vaporator Lens Technology uses a Porex filter and a silicone seal to adjust to air pressure and prevent fogging
  • Quick-release lens system lets you swap out lenses at lighting-fast speeds
  • 5X anti-fog inner lens has a hydrophilic, micro-etched surface to stop fog before it can even start
  • Frameless design throws down with wide, unrestricted peripheral vision
  • Triple-layer DriWix face foam with fleece lining creates a smooth seal with your face and is insanely soft
  • Ultra-wide silicone-coated strap with QuickFit strap adjustment holds these goggles to your head
  • Microfiber goggle bag has a replacement lens sleeve to safely get your goggles to and from the mountain
  • Item #SMI0898

Tech Specs

Carbonic-X with TLT optics
Interchangeable Lens
Eyeglass Compatible
Face Size
medium to large
Recommended Use
skiing, snowboarding
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Great Goggles

  • Familiarity: I've used it several times

I needed an upgrade from my very old Scott goggles. These were recommended by my wife (who bought hers last year). I was concerned about the reviews that spoke about the fit being small for large heads. But they fit great and are super versatile with the interchangeable lens. Used them for one season and love them so far.

Cant go wrong with smith IO

  • Familiarity: I've put it through the wringer

I have had many different goggles in the past from electric, Oakley, and more in the past. When out on the mountain these pieces of equipment are so key to performing well. The issue i always came across was durability. Smith hit the nail on the head with these lens as they integrated the fog x lens treatment. This uses a hydrophilic lens coating which absorbs and disperses moisture across the lens eliminating fog. They actually put these through the test and it withstood 120 seconds of constant fogging in a lab, and i can attest this on the mountain as i have never had a problem. The other advantage is with the multi lens system. Sol-x for high light days are great at protecting the eyes but the sensor lens really makes a difference on flat light days. These sensor lens increases the visibility of shadows that bumps and flat spots create. If you have ever skied on a flat light day you know how important it is to be able to quickly react to variable terrain, and these goggles give the best shot at it. Do yourself a favor and go the IO route. If you have any questions i am available 7 days a week to chat about my experience with them:

Cant go wrong with smith IO

second pair

  • Familiarity: I've put it through the wringer

This is my second pair of the I/0X and love them, i bought a second pair simply because the first had lived their lives to the fullest. I put a lot of days and wear and tear on these and have never had issues, the foam just got somewhat gross after 3 years of use and needed a replacement set. these are worth every penny, never get fogging easy to change lenses when needed and comfortable, compatible fit with smith helmets

Always 1st to recommend!

  • Familiarity: I've put it through the wringer

I love these goggles, and always are the first goggle I personally recommend to customers looking for the best. Any of the Smith I/O series will fall into this category, the I/O X are just the largest lens out of them. Anti-fog is killer, I have never had a problem on the hill unless I don't take my goggles out of my case and dry them (my own fault!). The lens quality is also pretty awesome, and if you forget your low-light lens on a powder day, you will still be able to see the bumps in the snow with your high-light lenses. Pair with any Smith helmet for perfect compatibility. Lens changing system is very straightforward and once you get it down, it takes less than a minute to swap lenses.

Always 1st to recommend!

Upgraded from I/0 S to X

  • Familiarity: I've put it through the wringer

I have been a Smith Goggle user and fan for the past 7 years. I upgraded to the Smith I/O X (from the S) for the increased peripheral vision which makes a meaningful difference. As always the optics in Smith goggles are stellar and I have never once had fogging issues. Pair Smith goggles with a Smith Helmet (like the Variant which I have) and you are set.

Too small for large heads

  • Familiarity: I've used it several times

The review says fits "medium to large" but if you have a larger head these won't fit it. They have a pretty tight curve so are really uncomfortable to wear for any extended period of time. If I still had the box I'd return.

Full Coverage

  • Familiarity: I've put it through the wringer

I usually like small goggles and have ridden with IO's for a few years, however I just upgraded to the IOX and I am stoked! The field of view is fantastic and overall these are the most comfortable goggles I have worn in years.

Smith usually is pretty good in terms of not fogging and these perform even better than my IO's. I ride chairs a few times a year and spend the rest of the time touring. Touring can be brutal on goggles as they are constantly going in the pack or the jacket, lifted up on the beanie and subjected to a fogging up.

These held up excellent on a recent trip to Rogers Pass in damp conditions and several days in a hut. No fog and the Red Sol X was a great all around lens for the sporadic sun to grey conditions. Obviously these are better suited to a medium/large face, but for the average person they fit great. I was concerned about fit with my climbing helmet I use while touring, but no gaper gap. I am sold on the IO X.

Great Goggles!

  • Familiarity: I've put it through the wringer

Love these goggles. The first couple times the lens change seemed a little rough but once you get the process dialed, it's easy. When changing remove lens from the top to the bottom and install from the bottom to the top. Super simple.

These have the great vision quality that you would expect from Smith. Love the large size for my larger face size. Plenty of peripheral vision.


  • Familiarity: I've used it several times

I was on the fence about buying these goggles, mainly due to the issue about helmet compatibility with non-Smith helmets. To my relief, these fit perfectly with my Bolle slide helmet (no gaper gap and no ventilation issues). These goggles DO NOT FOG, and they fit perfectly over spectacles (even if they have large frames, which I do). The 2 lenses (green sol-x and red sensor mirror) are great for bright days and dark days respectively, though my only complaint is that these are not as easily interchangeable as they advertise. Regardless, once you've done it a couple of times it becomes quite alright. Would recommend!


The prefect fit

  • Familiarity: I've put it through the wringer

Love these goggles! I have a large head so the fit is perfect for me, especially when paired with the Smith Vantage helmet. My favorite feature is the interchangeable lenses which allows me to change the lens to match the light conditions as I ski. If you don't think that is something worth having, you should see what a flat light lens can do on those days where the snow seems to just blend together. The 5x anti fog is also a game changer. I used to fog up my old goggles all the time, but with these I am good to go even when my breath gets hot.

I recommend these to anyone with a larger head, like myself, that wants incredible visibility and the ability to swap lenses on the fly.

Do yourself a favor, pick up these bad boys and shred in style!

The prefect fit

Adequate for the job

  • Familiarity: I've put it through the wringer

Good goggle, but not super innovative.
Now using the Anon M3s, easier to change the lenses. Going to try the Julbo Aerospace Goggles next, photochromic and it looks like you're less likely to need to have issues where you'd need to change lenses.

Best I ever had.... and still have

  • Familiarity: I've put it through the wringer

These things are everything to me when I am skiing. I have one of the original models and I know most brands have caught up to the interchangeable lens design, but I don't see these ones failing for long time. Once you get a hang of the method, it can be done in seconds and wont have seal or fog issues. I have trashed both lenses it came with, but haven't needed to replace them yet because the clarity is still high. I love the field of vision, the big on your face look and the murdered out look of the blackout. Others might argue that they don't look good, but I love the look. And the Red Sensor that came with mine is a great low light lens. I'm sure my next goggles will blow me away too the way new technologies are going, but these will always have a place in my heart.

You can even catch me making datass face (pic) while skiing pow cause the goggles are so good

Best I ever had.... and still have

The Perfect Goggle

  • Familiarity: I've put it through the wringer

I've had and used these goggles for the past 3 skis seasons and have absolutely put them through the ringer. I initially was attracted to them due to somewhat of a limited field of view on my previous Oakley goggles. The Smith I/OX was hands down the right choice for accomplishing this. I didn't realize how much that I WASN'T seeing around me until I started skiing with the I/OX.

The fit is fantastic as well. I wear these along with my Smith Variance Helmet (also available on Backcountry) and it has created a great setup for my noggin. One of the largest benefits of keeping it all in the Smith family is that all of the venting for the goggles and the helmet line up perfectly which equals a fog-free day of skiing.

The ease of changing the lenses is perfect for a quick swap out on the chair between runs. Think: you believed the forecast for a bluebird day but after a few runs cloud cover moves in and those obvious bumps become not so obvious. You easily swap out the Red Sol X lenses for the Blue Sensor lens (included for free) on the lift and then you're on your way.

All in all, these goggles are a must purchase from my perspective when you consider the price, features and Smith's great warranty backing them. These will be my goggle of choice for years to come!

The Perfect Goggle

Need a bigger helmet.

  • Familiarity: I've used it once or twice and have initial impressions

I got these goggles after purchasing my helmet, a K2 Rival Pro, in medium. The goggles came a week ago, and they fit fine on me, as does the helmet. The problem, however, is that the helmet and goggles don't integrate well. Either the goggles push the helmet up so it sits awkwardly on my face, or the helmet pushes the goggles down so they almost cover my nose instead of my eyes. Even though they fit me fine, the goggles are made for a large helmet, and they don't work with anything smaller. Sadly, I can no longer return the helmet and even if I could my head is a bit too small for a large. Ugh... I love these goggles and they're the bomb, but I'm going to have to get a new helmet for them. Any suggestions? (I don't want something with a huge brim, like a sandbox or the K2 Thrive; basically, I need a helmet with a brim like the Smith Holt, but with an adjustable fit system. A large K2 Rival pro would do, but I can't find one with the right color anywhere.)

Solid Choice

  • Familiarity: I've used it several times

I have used these several times in windy, snowy conditions. I like the contrast and definition these goggles provide in flat light. They are a huge improvement over my previous less expensive pair. My favorite feature of these lenses is the lack of fogging while hiking uphill. I recently had them on a 14er and, they performed well.

Solid Choice

Has anyone purchased or tried the Asian fit?
Does it solve the problem of our lack of a nose bridge or does it create new issues with air seal around the cheeks and eyes.

Hey Mike

Although I have not tried the Asian fit, I'm an Asian and I purchased the normal fit one. It did not create any problems for me, and I feel that I have a typical Asian face. I don't think the lack of a nose-bridge was a big deal, and the seal around my cheeks and eyes were pretty good. Best goggles I've owned

Hope this helps!

what are the best lense color to have clearest and brightest view? i have nike khyber transition goggle and i found it too dark and its yellow tint is too much for me. i wanna go back to smith goggles this time. what are your suggestions?

do thesse come w other lens's? and of so, are both polarized?

anyone know what helmet these goggles would fit best with? the smith maze or the holt?

How do these integrate with a k2 Rival Pro helmet. I really want/need a pair of these but I want to have them sit well with my helmet. Any info would be super helpful.

Best Answer


The Smith IOX will definitely work with their Seamless helmet integration designed to make the helmet and goggles streamlined as one piece and is compatible with your K2 Rival Pro helmet. A Smith Helmet may be the best fit for the goggle being that smith makes their products to fit their goggles, but you should be sittin' good and comfortable with these with the current helmet you've got.

If you've got any other questions feel free to hit me up on my direct email : or my direct extension at 800.409.4502 ext 4789 and I'd be stoked to help get you dialed in with the right gear for you.

Hello I'm 15 and have a pretty large head bigger than my 17 year old brother, would these be ok for me or should i go with the I/O.?

Hey Mitchell,

I'd say you'd be good to go with either pair of Smith's that you'd choose. Sounds like your brother may have a smaller head than you do, which means you'll have a wider variety of choices for goggles and helmets.

If you have any other questions feel free to hit me up on my direct email at

Will these fit over the glasses? Smith's...

Will these fit over the glasses? Smith's website says that it fit over the glasses while this website says its not eyeglasses compatible. Also I tried a pair of I/O at a store and it didn't quite fit with my glasses.

how do these goggles fit with a poc receptor...

how do these goggles fit with a poc receptor bug helmet?

They will fit will most if not all modern helmets. If you are like some that wear the strap on inside of helmet instead of the outside then you're going to feel a little bit of pressure from the QuickFit strap in the back but it's not that big of deal provided your helmet is not small on your head to begin with. Other than that the goggles are compatible with POC helmets yes.

How do these fit with the smith maze...

How do these fit with the smith maze helmet?

I've got the maze and I/OX and love that combo.There's no gaper gap and it fits the helmet perfectly. Only complaint is that the plastic connection on the goggle doesn't always fit best with the goggle clip. Other than that it is a perfect match. Any smith goggle and smith helmet setup will likely work great though.

Where is there a description of how the...

Where is there a description of how the various IOX lens (colors) relate to light conditions when skiing. I find the older colors, but not the new ones on the web site Oct. 2012

G-Papa, you'll need to check out smith's site for the specs on lenses, here is the link. For some unholy reason they don't show any info for the Blackout lens but everything else is listed.

Unanswered Question

"Plus, when you're chatting up that hot...

"Plus, when you're chatting up that hot thing at the midway bar, the I/OX are sure to memorize."

I think you mean mesmerize.

are replacement lenses the same/interchangeable...

are replacement lenses the same/interchangeable with standard I/O?