GuraGear Kiboko 22L Backpack
The Kiboko 22L is the baby brother of the famous Kiboko 30L, and features the same awesome butterfly design, lightweight construction and great features. It's obviously not as large as the 30L, but can still hold multiple pro-sized camera bodies and up to 300mm f/2.8 lenses in each of its compartments. It will NOT fit a 400 f/2.8, 600 f/4 or 800 f/5.6 - for those lenses you will need to go with the bigger Kiboko 30L.
Otherwise, this bag is the same as the Kiboko, and features an included rain cover, butterfly flap access system, and tuck-away harness system for the backpack straps. If you're not shooting with huge glass all the time and want to check out a world-class travel bag, look no further than the Kiboko 22L.