The venting system to keep both your glasses and the lenses on this goggles depends on movement of air which is greater when downhill sking but not so predictable when alpine sking.
Very easy to exchange lenses however the goggles were too large for my wife when using a ski helmet. The goggles forced the helmet to be pushed up high on her forehead. The same thing occurred with my adult daughters helmets.
These are amazing in the wind. I have allergies and these were the last product I was going to try. Glad I did. They are comfortable and keep the wind from irritating my eyes. Great purchase for riding motorcycles.
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