(Open swim) Excellent visibility, I must say.
The peripheral vision is perfect for having a clear picture of what's around you.
They do fog up, yes... like all goggles, I believe. But to a degree that doesn't bother you at all (at least not me).
I believe with good maintenance and care, they will last me until next year

It is impressive how little tightening they need to completely seal. I am still experimenting, I have reached 0.5 on the strap scale (0 being completely loose) and not a drop of water can get in! The texture of the material? It makes you forget that you're wearing them and leaves minimal marks on the face. The visibility is very good, thanks to their low profile, as well as their hydrodynamics. I consider the design to be excellent, but that is subjective.
Fogging: they fog up like ALL goggles regardless of the manufacturer's claims, so I don't consider it a criterion. In this case, the protection lasted only one day.
Solution: half a drop of regular liquid soap on each lens. Wet your finger in the sea and spread it evenly. Dip the goggles once in water (this removes any excess), lightly shake them, put them on, and you're good to go. Shampoo, body wash, Baby Johnson, anything similar will also do the job.
Overall, their price sounds outrageous - with the same amount of money, you can buy a very good diving mask. However, for anyone who has struggled with goggles that suction perfectly fine when trying them on in the store but behave differently in the water, trust me, it's worth it.

These glasses exceeded all expectations. I bought them to replace my previous pair of Speedo goggles that started leaking after years of use. As a girl with a small head, I was worried about whether they would fit since they are unisex. The packaging includes 3 additional interchangeable nose bridges, so they can be adjusted accordingly. They don't let any water in and they don't fog up at all, no matter how long I wear them. I can see clearly underwater and I don't need to stop swimming to adjust them. Even in sunny conditions, they filter the light perfectly, better than sunglasses. Another positive aspect is that they leave minimal marks around the eyes, even if I wear them for a long time. I have sensitive skin and with my previous goggles, which were also very good, I would have marks for a long time, even with short use. With these goggles, the mark is minimal and disappears quickly. They may be among the most expensive goggles available, but they are worth 100%.