what are cat 3 lenses?
Our sunglasses all have Cat 3 lenses. Cat 3 provides increased protection from both visible and UV light. These lenses will usually only allow less than 20% of visible light to penetrate the lens. This means that they will block out 80%+ of light. These are perfect for Trail and Mountain running in the Summer or in snowy and wet conditions where you need to protect yourself from reflected light.
Check the Sunnies you are using are up to the job...
I has a question about Cat 4 yesterday. Cat 4 are the next level up and only let less than 10% of light in.. Use Cat 4 for extreme conditions and high altitude.. Whatever you do, don't drive in Cat 4 Sunnies as they are way too dark..
Feel free to email any questions to firstname.lastname@example.org .