When the rest of your gear is light, you won't need to carry a behemoth 6,000-cubic-inch pack to haul 60-pound loads. Instead, for trips between one and five nights, look for a pack like Gregory's Z65 ($250), which has comfortable suspension and just under 4,000 cubic inches of capacity. Or go superlight with Osprey's Exos 46 ($179), a 3,000-cubic-inch pack that weighs only 2 pounds 5 ounces.
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