The best backpacks the ones that last the longest and stay in good condition no matter how much you abuse it have all the following characteristics that make them durable, long-lasting, and will protect your stuff from the rain. Dont get a backpack that doesnt check off all the boxes on this list. While your pack does not need to be 100% waterproof (that is unless you are going on some long multi-day hike), make sure your bag is made out of a semi-waterproof material so everything doesnt get wet in a drizzle (most travel backpacks come with tarps you …