Quick interchangeable Toric Lens Complete UV Protection (UV400) Clarity lens from Zeiss with Ri-Pel lens treatment, anti-fog treatment (on inner lens), and -anti-scratch treatment (on outer lens) 47% bio-based frame and strap materials by weight Extra-wide field of view With an exceptionally wide field of view, bio-based frame materials and easily interchangeable lenses, the Zonula combines sustainable credentials with exceptional ease of use. Frame outriggers make it easy to handle the goggle and allow the lenses to be popped out so they can be easily changed. Simply by squeezing the outriggers to form a gap between the frame and the lens, the lenses can easily be removed simply by holding the edges, limiting the risk of damage to the surface. The goggle frame and strap features 47% bio-based materials by weight, to minimize environmental impact. Clarity lenses, developed in partnership with Carl Zeiss, ensure optimum vision on the snow in all riding conditions.