Tifosi gave the Rail XC Interchange Sunglasses a little bike-ready flair, keeping us ready for speedy cycling and sports training. With the Interchange lens system, these glasses come with three polycarbonate lenses, all ready to tackle the trail and easy to swap when light conditions change. Secure temple and nose tips stop these sunnies from flying off our face on a hard brake, and they're so lightweight that we barely feel 'em when we're on the move.