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Old 04-12-2012, 12:58 PM   #28
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Joined: Apr 2010
Location: Agoura Hills ,Ca
Oddometer: 1,395
Oxygen (air) is corrosive to most of the glues and foam cells used in helmets. Thus, they lose their structual integrity over time. Even helmets in a box will lose their ability over time. The foam and glue outgasses and loses molecules. Ever see an old styofoam cup and see how the cell edges have contracted? The the same thing happens in your helmet and glue keeping all in place.
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