As your professional shred consultants, we highly recommend the Smith I/OS Replacement Lens for pretty much everything. Mostly though, these lenses are great for fine-tuning your optics to your local conditions or replacing a worn out lens. Whether that's worn out through use, or from your best-dog-friend getting too stoked on them, it's all good.
Spherical, Carbonic-X lens with TLT Optics
Patented Vaporator Lens Technology with Porex™ Filter
5x Anti-Fog Inner Lens It basically tells moisture to go fog itself
Compatible only with Smith I/OS Goggle Frame