Smith Preview Goggles The Smith Preview Goggles combine expansive BirdsEye Vision(TM) with ChromaPop(TM) optics for a wide, terrain-defining view of the mountain. BirdsEye Vision(TM) extends visibility into your periphery, while ChromaPop(TM) Lens Technology enhances contrast, natural color, and terrain definition. Smith&';s Responsive Fit(TM) frame flexes to the contours of the face, while 5X(TM) anti-fog technology and AirEvac(TM) ventilation help maintain clear vision throughout the day. An OTG-compatible design provides additional room for riders who wear glasses. Summary Fit Profile Medium Fit Lens Shape BirdsEye Vision(TM) Lens Technology ChromaPop(TM) Lens Technology Lens Change System Standard Fixed-Lens Design Anti-Fog 5X(TM) Anti-Fog Inner Lens Ventilation AirEvac(TM) Ventilation System Face Foam 3-Layer DriWix Face Foam Helmet Compatibility Yes - Smith Helmet Integration OTG Yes - Designed to Fit Over Glasses Bonus Lens No Included Accessories Microfiber Goggle Bag