Choose from our range of hiking backpacks that'll comfortably carry your essentials for a weekend getaway or a longer trip into the backcountry. Extended trips (five days and longer) -- These packs hold more than 70 liters (4,200 cubic inches) of gear. They feature substantial load support and ample suspensions. Though designed for long trips, they are also well suited for shorter spring and fall trips when you need to carry additional clothing. Multiday (two to four days) -- This popular category includes packs ranging from 40 to 70 liters (2,400 to 4,200 cubic inches) of gear capacity. Technical daypacks -- Designed for trail use, these packs tote the Ten Essentials and more.