Once upon a time, suitcase size didn't matter much. Chronic overpacking was a cute quirk, and traveling light was mostly a backpacker preoccupation. But then along came baggage fees, and everything changed. Today, travelers try to make every item in their suitcases work harder and smarter. From heated shirts to bug-fighting pants, we've rounded up easy-to-pack items that transcend their seams and do double (and triple) duty in your travel wardrobe.
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