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.
I bought this brand of ski goggles over 35 years ago for my husband. They had finally disintegrated. I searched locally and could not find the same kind. I then went to Overstock.com and found just what I wanted. My husband is very happy with them. The package arrived promptly and the fit is perfect.
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.
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