Domke F-5XB Shoulder/Belt Bag - Black
The Change Up V2.0 is a chamelion of sorts as it can change from belt pack to shoulder bag to chest pack via the included harness system.
It is perfect for photographers shooting in changing environments.
In addition, it is modular component compatible allowing you the ability to add extra pouches to increase carrying capacity as needs change.
Designed to carry a standard-size DSLR and a 70-200 f/2.8, (detached), it has a significant amount of capacity in a lightweight body-conforming shape.