After pulling up to the top of the First Flatiron, three other climbers in tow I realized I'd been carrying everybody's shoes and water for the day without really noticing. Generally I carry a little 18L bullet pack and there's always a gaggle of shoes hanging off harnesses and people skimp on water so they don't have to carry it but here I'd found a pack where I could carry the groups equipment inside the pack, still tilt my head to look up, and was pretty comfortable doing so. Black Diamond's Axis 33 is a pretty nice pack. With a few tweaks it could be the ultimate climbers day pack.