I would not recommend these googles.
Pros: the additional visibility on the bottom is nice; chromapop lenses are pretty good for giving a neutral shade with good contrast
Cons: the outer coating on these lenses is incredibly fragile and got scratched by the Smith case they came in after 2 days, as well as getting a nasty scratch from a plastic piece of my car—my previous (Oakley) goggles lasted 6 years, I’ll be surprised if these last the summer in the case (i.e., sitting in the case with no use ;) ). Also, Smith decided it would be cool to press some sort of pattern into the foam that fits the goggles against your face—which makes the foam in those pressed locations slightly like sandpaper (I do have more sensitive skin than most, but I saw this on some other reviews and thought it’d be worth a shot).

I’m somewhat astonished Smith is able to sell these hot pieces of garbage—but they got me, too.

These goggles are worth it. These fit well and the lense change is easy. I love to see everything and this Chroma Vision is fabulous. I bought cheap goggles and they were crummy. These are perfect!

I have goggles from virtually every brand and several styles of Smiths, but these goggles have ruined me! I don't want to wear any other goggles because these make such a huge difference in the Field of View on the top, bottom, and the sides. The clarity is amazing and I am actually surprised that these fit me better than the I/O Mags, which I also love.

I have the Sun Green Mirror, Rose Gold Mirror, Sun Black, Sun Platinum, and Rose Flash and they're all great for different conditions.

I highly highly recommend these and can't sing their praises high enough.

The goggles look great, the field of vision is definitely increased, but the foam that is in contact with the skin was super irritating under the eyes. I did extensive research on what goggles I wanted to purchase, trying on multiple in store to ensure I liked the feel so to have the goggles become irritating to the skin was a huge let down. I ended up having to pull my face mask up under the goggles just to keep the foam from touching my skin. I've never had sensitive skin and just to make sure it wasn't just my skin I had be girlfriend wear them for a day and by lunch her skin was also irritated and wanted to switch goggles. Big let down with how expensive the goggles were.

Great field of vision as claimed but construction of the frame and foam could, and should, be better for this price level, noticed gluing errors and uneven foam placement on the plastic framing. Quiksilver has been bending lenses on the left and right peripheral for years with little to no distortion, so its a little perplexing that Smith bring a leader in vision wear hasn't fully dialed in the clarity of the lens bend, or perhaps mellowed out the bend so its not as advertisably noticeable. Would love to see a little more of a perpendicular fit and not push out the top so much to exaggerate more angle to increase the bottom viewing area. Overall a good goggle but would have felt better paying 150-200 for these. Def hyped up but they do have good clarity in the main viewing window and overall decent to good construction.

I was really psyched to try these out, but sadly they did not impress. The "expanded" downward field of view offered by the "birds eye" curve at the bottom of the lens was less than many other goggles I've tried, including my current 5+ year old VZ fishbowl. Maybe its an improvement over the I/O MAG as Smith states, but if that's the case then I would advise everyone that there are way better options out there. In addition, the sharp curvature at the bottom of the lens that allows for the "expanded" view is incredibly distorted and blurry, making this portion of the view not really even usable. Hate leaving bad reviews, but these goggles really disappointed.

I have been a fan of the Smith mag goggles for some time. This new version is great in that you have a seemingly frameless view of everything, with excellent sun protection. I especially appreciate that they have provided an extra lens (dark for bright days, light for cloud (and even night skiing). Also, with this version you get a great case that staps in the extra lens with a microfiber cloth. This is a step up from prior models. I am a fan.

These goggles rock. I have used Smith goggles for years and the tech in these new 4D lenses is really something else. They really do expand your vertical vision, allowing you to see further down that any normal goggle does. The MAG changing is super simple and easy, I can do it without taking the goggles off and even with a glove on one handed. A huge plus is that the goggles come in a premium hard carrying case, something that my previous IO/X's didn't even come with!
So far I have gotten 3 lenses for these goggles. The Everyday Red is perfect for sun, overcast, or even a light storm. The Storm Rose was awesome during the 2ft powder storms we had this past weekend here in Utah. Haven't tested out the Silver Sun lens yet, but should be perfect for spring skiing! Also, Smith sells clear lenses for night skiing on their site.
As far as fit goes, these land somewhere between the regular I/O goggles and my old I/O X's (now the I/O XL's). These big goggles might not fit smaller faces well, but should fit normal faces just fine.