Spherical Carbonic-x lens for distortion-free optics and impact resistance Fog-X anti-fog inner lens for fog-free performance QuickFit strap adjustment system lets you find the right fit fast Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance Fits over the glasses (OTG) and is compatible with our optical docking system (ODS) prescription lens insert Floating foam membrane eliminates eyeglass temple pressure Two-layer DriWix face foam wicks moisture for a fog-free fit Smith Sequence OTG Goggles + ChromaPop Storm Rose Flash Lens