Carl ZeissTwo interchangeable lensesDesigned in Stockholm For clear, undistorted vision on every run, the 04 Ski Goggles feature a 1.8mm premium toric Carl Zeiss lens with maximum vertical and peripheral range. An outrigger lock system keeps them secure with any helmet, while the quick lens- change mechanism adapts to shifting conditions. The adjustable CHIMI logo strap, perfect-fit foam and anti-fog ventilation ensure all-day comfort. Comes with a hard case and pouch for protection that lasts season after season. [b]Technical details (for the gearheads):[/b] Frame: Bio-Based TPU Lens: PC Strap: Nylon/EA Strap Adjuster: Bio-Based TPU 100% UV protection