The K2 Photokinetic Pro pairs a Carl Zeiss Vision spherical lens with a medium frame, dual density face foam and an UltraPlush micro fleece facing, with an anti fog treatment on the inner surface. Worth saying plainly: the Photo in the name is K2's range convention rather than photochromic glass, so the tint is fixed and the goggle is chosen for the light you actually ski in.

• Not photochromic: the lens tint is fixed. The Photo in the model name is K2's range naming, not a lens technology.
• Carl Zeiss Vision spherical lens: a curved dual layer lens, which gives a wider distortion free field of view than a cylindrical one.
• Ventilated dual lens construction: the air gap between the two layers is what keeps the inner surface above dew point and clear.
• Ri-Pel coating: a hydrophobic vacuum coating that repels water and resists smudging and scratching.
• 100 percent UV protection
• Helmet compatible: helmet driven topline with dedicated strap brackets and a triple silicone backed woven strap.
• Frame and face foam: Medium frame with dual density face foam and an UltraPlush micro fleece facing, plus an anti fog treatment on the inner lens.
• Discontinued model: from an earlier K2 goggle generation, so this is remaining stock and no spare lens is included.