Lowepro Protactic BP 350 AW II
There are several models in the Lowepro Protactic range however only two of them are backpacks. The 350 is the smaller of the two and is suited for a camera without a battery grip as the bag is not deep enough for a grip. The Lowepro Protactic 450 on the other hand is deep enough for a battery grip on a camera and of course the larger lenses. You will find a link to the Lowepro Protactic BP 450 AW II on this page.