larger frame, wider field of vision. dragon has updated the dx3 otg goggle and developed a larger version that offers improved peripheral vision. the dx3 l otg frame has been designed to focus on comfort and quality, featuring lumalens colour optimization and otg compatibility. this frame is perfect for those needing a larger goggle without compromising comfort, quality, or style.lumalens® dark smokethe lumalens® technology provides optimized colours and glare protection through an ionized lens coating. the hard coating is scratch-resistant and repels dirt, dust, oil, and water.light transmission 23 %