The Katana with our famous photochromic and polarized lenses will accompany you in any adventure! You won’t need to change the lens as the photochromic pigments in the lens get darker and lighter as the light changes and the polarizing filter eliminates all unnecessary glare.The cylindrical lens and the ‘‘real no frame’’ technology bring the lens right up to the end of the frame increasing the field of view and the functionality.The Katana has all the high end features all Out Of’s goggles have:triple density foam, inner silicon grips with fading texture.1 photochromic and polarized lens to always have the best light filter.2 All the premium features Out Of’s goggles offer:premium anti-fog, anti-scratch treatment, triple density foam with hypoallergenic fleece, inner silicon grips with fading texture, wide field of view, ‘’no-frame’’ design for an ‘‘all lens’’ look.