Awesome glasses, easy/cheap replacement lenses - ESS CDI Replacement Lenses - 2.2mm Polycarbonate Interchangeable Lenses

These lenses make it easy to carry around a second pair of lenses in case you need to swap to clear or dark because the sun has either come up or gone down. They don't take up a lot of pocket space and they are durable. Not too expensive to get new lenses either. Would recommend these glasses and lenses to anyone.
Pros: easily carry a second pair of lenses on you and swap them out at any time with out taking up a lot of pocket room
Cons: not APEL approved glasses

This review was written in the old system and had content requirements that are different than reviews written today.