TThe goggle interface design has been engineered with a special Micro-Vent geometry allowing moisture and heat to be released from behind the lenses via dozens of small, vertical channels. The channels are small enough to prevent dust from getting in while presets have been integrated in the architecture to house foam filters or special membranes according to mission requirements, such as sand or chemical protection.
ImpactX® lenses are photochromic. This means they get dark from low to high light transmission within few seconds and reaching a custom color from an initial clear state. They enhance contrast, improve visual acuity and depth perception. ImpactX® lenses are 16% lighter than CR-39 and 10% lighter than polycarbonate; they have lower internal stress and chromatic dispersion than polycarbonate, resulting in sharper images, higher definition, reduces “rainbowing”, and more visual comfort.
I got 3 of the spinair 58 purple, blue and red. I bought the glasses because of the adjustable nose piece. Now I'm buying the Demi brown.
My Propusle RX prescription glasses with ImpactX Photochromic 2 Red are my all-time favourites. For everything from XCO racing to Gravel night rides these lenses perform under a wide range of conditions. I love them so much I'm planning to buy a 2nd pair.
Great helmet - combo of perfect fit, light weight - really nice for training. Easy to adjust / fits according to sizing.
Nice plus - great helmet for racing triathlon in really hot conditions - very breathable for racing yet aero.
Would / did recommend to many friends who also like it as well.