portal xl is the (literal) expansion of the award-winning portal and offers the largest setting ever. with all the same great features as the portal, including zeal optics' patented rail lock system, the portal xl offers a larger fit with more coverage. 
the vertical rail lock system makes changing lenses on the go a breeze and allows you to vent your lenses while hiking or on the deepest, wettest days for fog-free skiing and snowboarding, so you can keep charging while others are sidelined by foggy lenses.

dark grey lens
the dark grey lens is best suited for sunny and slightly cloudy days.transmittance of visible light: 10 %filter category: 2featurespermashield hard coating for durabilitydual lens construction for better visiondual harness adjustment for good supportnon-slip grip for a good holdanti-fog for a clear viewhelmet compatibleotg-ready