Details from Dragon:
Our most advanced goggle with a cylindrical lens, the NFX2 has all the bells and whistles: Patented Frameless Design, Swiftlock technology, armored venting, Super Anti-Fog coating, bonus replacement lenses and more. Additionally, the NFX2 utilizes our Lumalens color optimized lenses bringing next level clarity, adaptability, and style to the Dragon lineup. This goggle utilizes features derived from Dragon's patented Advanced Projects X (APX) technology.
LUMALENS® is a color optimized lens technology offering ultra-high definition optics across the entire spectrum of light conditions. Engineered to improve and optimize visibility in all environments, Dragon’s exclusive LUMALENS® technology delivers superior color vividness, improves depth perception, and reduces eye fatigue for better performance.