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As Wills touched upon in his answer, it's quite useful for sports at night (mountainbiking, skiing, orienteering, etc). But not only does it it allow you to move more safely during the night; it al...
Answer
As Wills touched upon in his answer, it's quite useful for sports at night (mountainbiking, skiing, orienteering, etc). But not only does it it allow you to move more safely during the night; it al...