Explorer 2.0 / Protection at its highest Faster, stronger, higher: high mountaineering is changing, and the same is true for Julbo’s flagship model. More ergonomic, better ventilation, slimmer and more stylish, Explorer 2.0 reaches new summits in performance. With large coverage, removable shields, 360° adjustable temples and high protection lenses, these glacier sunglasses are designed for extreme conditions without any comprise. Spectron 4 Polycarbonate Lens - Cat. 4 lens with flash +AR coating. It is suitable for all sports where there is exceptionally bright sunlight.