osprey backpack blue | Nebula 32 | Atlas Heather an internal hydration reservoir compartment ensures additional fluid supply Osprey Women's Tempest 22 Anchor

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Osprey doesnt indicate any waterproofing treatment, but it looks like the fabrics weave is tight enough that it has some natural waterproofing ability

A bag listed as 60 will accommodate a user up to 60

As it turned out, I had to gate-check the Black Hole Pack both heading out and returning home (I pulled the hiking daypack off it to use as my carry-on) and it survived two flights and transfers in each direction without so much as a scratch, thanks to the virtually impregnable, water-resistant, bluesign-approved, 300-denier, 100 percent recycled polyester ripstop fabric with a TPU film laminate

The backpack features a large main compartment with full opening for easy packing, stretch pockets for water bottles, and thoughtful handles to simplify handling

Yes, the bag was big enough and I still had some space left