CamelBak Lobo

When I ride muni, I've been wearing a "lumbar bag", as L.L.Bean calls it. I put a water bottle, key, cell phone, wallet, a folding tool, and food in it. When I hop, it bounces like crazy.

So I bought a CamelBak. The model is the "Lobo".
It can hold more than 4 times the water I've been carrying, though I won't be needed that until I can ride a few hours longer.
Hopefully the chest and waist straps will keep it all from bouncing around too much.