larger frame, wider field of vision . dragon took their best-selling dx3 otg goggle and made a larger version that offers improved peripheral vision. the dx3 l otg frame is designed with a focus on comfort and quality, and it comes with lumalens color optimization and otg compatibility. this no-nonsense frame is perfect for those who need a larger goggle without sacrificing comfort, quality, or style.lumalens® dark smokelumalens® technology offers optimized colors and glare protection thanks to an ionized lens coating. the hard coating is scratch-resistant and repels dirt, dust, oil and water.light transmission: 23 %