Ergonomically perfect glasses! If it is adjusted correctly, it nestles comfortably against the face and seals perfectly. When you dive into the water for the first time, you are impressed by the clear view that opens up. The visual strength, in my case -3, enables clear vision. Even though I should actually have -4 in one eye and -3.5 in the other. After just 1 or 2 laps you can no longer feel the glasses. It almost feels like you're swimming without glasses, but you can see everything perfectly both above and below the water. The glasses don't fog up either. I always swim for an hour (3000m). So far I'm thrilled. I hope this lasts for a long time. To avoid scratches, I always put the glasses in the included bag. According to the description, you can also let it dry like this. By the way, I previously had an Aquasphere Eagle for many years. This also has correction lenses. Not bad glasses, but not nearly as comfortable as the Watery glasses. After swimming I always had red marks around my eyes. In addition, these glasses had to be adjusted more tightly to achieve a reliable seal. The goggles were always noticeable through a feeling of pressure when swimming. That's why my clear conclusion: buy them!