It might cost you a bit more, but if you travel often or know you will be going somewhere that has a lot of moisture in the air, then the answer is yes. While it may sound baffling at first, it isn’t that uncommon to be stuck outside with your luggage during a rainstorm. Unless you are super prepared and have a spare trash bag or raincoat on hand for your suitcase, chances are the contents of your bag will be soaked. With waterproof or at least water resistant packing cubes, your belongings will stay clean and dry no matter what the conditions.