I bought some prescription goggles from Swan last week (after reading lots of reviews) and was a little bit apprehensive because I have spent lots of money on normal goggles in the past and had found that only my daughter’s junior goggles do not leak. So spending money on prescription was a bit of a risk.  I emailed the company for advice and they were really helpful so I thought I’d try a pair. They are the best goggles I’ve ever worn. I swam for an hour and didn’t need to adjust them or defog them in that whole time (I did change the nose piece with one of the smaller ones before I swam). The vision is amazing. I’m so pleased with them and the service I received.