Levity 60The Osprey Levity 60 is the most comfortable and ventilated pack ever made for the lightest loads imaginable. It's perfect for weeklong, or even month long trips. In fact, it's probably not the right pack for you. It's for people who pack lighter, go further, and think smarter. This pack isn't on Instagram, because phones are too heavy, and views look better in your mind anyway. But if you are one of those maniacal gram counters, look no further.