I wear these goggles with the POC bug helmet, mostly skiing park.
As soon as you try them on you will notice how comfortable they are. Smith added 3-layer face foam and after a season with riding with the IOXs the foam still feels as good as new. Smith also added a thicker strap to this model and the strap has silicone lines on it to ensure the goggles do not slide around on your head. Quick release clamp on the strap is also perfect. The plastic used (on the quick release) is super thin, which allows it not to dig into your skin if you wear it under your helmet like I do. Smith also created a 5 layer anti fog lens and it works. I rarely ever dealt with foggy lenses even with a face tube right up over my nose. Along with anti fog, the clarity of the lenses is amazing. Smith offers each goggle with 2 lenses; usually one dark one light and they are both crystal clear and easy to interchange. I prefer the low lens being from Ontario we rarely have sunny days. Used the Low Light lens most of the season, had a few good face plant crashes and no scratches. The Lenses are also even bigger than that of the IO goggle. I enjoy being able to see everywhere around as well as my peripheral vision and the IOX lens allows for that. There are also a large number of interchangeable lenses ranging from $45-$145 on Smithâ€™s website.
Overall, I was really pleased with my purchase of goggles and would recommend them to anyone who enjoys a wide lens.
The I/OX is a great solution for anyone with a larger face/head.
Interchangeability with lenses is quite easy. The design maximizes peripheral vision and they overall are great looking goggles.
Durability: I had a pair for 1.5 season and my only complaint was with the strap pilling and getting quite dirty. Faster than any other goggle I have used. The lenses I had held up great.
I would recommend these to anyone with a med-large head. If you have a larger to XL head/face, these might be a little constricting and you may want to go with the Spy platoon (which I use now) or something just slightly larger.