Lloyd Alter, 1 February 2010, Canada: TreeHugger - Cars & Transportation (bikes)
Bike helmets are as much of a pain when they are not on your head as when they are- what do you do with it? Most people use U-locks, and if the helmet designers gave a moment's thought to the issue, they could adjust the hole pattern so that you could actually put a U-lock through them. But they don't, so you either have to carry your helmet around with you or leave it on your bike and depend on the kindness of strangers.
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