OverviewMeet Manitou. The first sunglass to combine our thin injection Z-Lite frame and photochromic Auto Sun lens into the ultimate adventure partner. Manitou will give you the grandest view in any condition without weighing you down. Auto Sun is designed for days outside in changing light conditions. Photochromic technology automatically adjusts from a low-light, bright yellow with a 28% Visual Light Transmission (VLT), to a high visibility persimmon with a 15% VLT for sunny conditions, while polarization protects and heightens color, definition, and detail. Zeal Optics Z-Lite Frames are designed with a thin injection process for an ultra-lightweight sunglass and complete versatility no matter the activity. Lighter, stronger, plant-based frames for all day comfort and everyday wear.