509 X5 Goggle - Prizm w/ Blue Mirror Blue Tint Lens The X5 frame was carefully engineered with PHANTOM frame technology. This unique design allows the goggle frame to disappear out of your field of view, leaving a clear vision path with less visible frame. The X5 features an all new Italian sourced Polycarbonate dual lens with greatly improved anti-fog coating and with a significantly more durable anti-scratch coating. The X5 features a restyled, oversized and removable nosemask to keep you warm and comfortable.