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For a do-pretty-much-everything hydration pack, we like the Gregory Sula 16 H2O Pack for our day trips. It's super comfortable with a ventilated suspension system and breathable shoulder straps to keep us cooler, plus a women-specific fit that hits us just right. The oversized hip-belt pockets fit our phones, lip balm, and energy chews, and the pack itself features several internal and external pockets to pack away our snacks, map, devices, and emergency rain shell or mid-layer. The included 3-liter water reservoir has a spine-molded handle for easy re-fills and an integrated drying hanger that fits nicely into the dedicated water sleeve pocket. It's easy to drink on the run with a magnetic sternum buckle and hose clip for the bite valve to keep it from flopping around on our hikes, runs, and bike rides.