brilliant bag! very strong, very strudy. holds my canon 70d with a 400mm f/5.6 attached to it, along with my 100mm macro lens, teleconverter, flash, batteries, etc and has a tripod strap too

"Most, if not all, the reviews regarding these bags fail to take into consideration one of the most essential elements of any outdoor activity where hiking is involved, as is often the case in nature/landscape photography. I'm talking about WATER (hydration) for the photographer.

Found the perfect bag to carry the D700 with Sigma 150-500 attached: LowePro Flipside 300. Leaves plenty of room for accessories. It even has a clip on the front to carry a monopod/tripod.

The Lowepro Flipside 300 ($99.99) is the largest of the Flipside backpack/camera bag series at exterior dimensions of 10.2"W x 6.9"W x 17.5"D (Interior 9.1"W x 5.4"D x 15.9"D). It's available in Black, Arctic Blue/Black/Red/Black color schemes. The Flipside 300 is deceiving.