If you've ever done any serious trekking with a heavy pack strapped to your back, you'll know that a sturdy frame can help better distribute the weight over your body. But it's a Catch-22 since the frame adds weight as well—unless it's mostly made of air like Klymit's new inflatable Air Beam. »7/12/12 11:25am 7/12/12 11:25am
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