With open water, triathlon and wild swimming, there are specific issues to consider when selecting goggles which do not come into play with pool swimming. For a start, the light conditions are highly variable outdoors, where glare, sunlight and reflections can affect your vision. Tinted or polarised lenses are a recommendation to combat these issues, and you may wish to keep an alternative backup pair handy, should the worst happen on race day and your strap snaps. A pair with clear lenses and a darker pair with tinted or polarised lenses might be a good option to change up according to the weather conditions on the day.
The other main factor is the goggle fit. Across brands and models, goggles tend to suit different face shapes, and finding the perfect pair to suit you is critical. It is easy enough to deal with problematic goggles while indoors, but in an open water situation your goggles cannot be a distraction. We recommend trying different brands and shapes to find the most comfortable and reliable pair for you. You may prefer the extra coverage and improved field of vision that a swim mask style provides, or you may prefer a neater, more hydrodynamic style.