This is my third camera bag and this time I think I've found what I was looking for. After a backpack, painful to use because each time we must remove everything, After Vanguard Pampas bag, excellent but become too small for my device (5D Mark II with flu ...) This bag really meets my needs. Very large capacity: - 5D Mark II with flu (seen removing the cushion when you have a flu), - 3 goals: 50, 17-40, 24-105, and all their sun visor, - 580EX II - Battery charger with batteries - 400D with zoom, - In the front pocket filters, portfolio, bridge Canon, various accessories, ... Ok there remains more room ... but it's unexpected. The principle does not remove the bag and rotate around the belt to access its content is excellent. The bag also allows to set a foot on transportation, with a clever pocket to secure the bottom of the bag. My first trip took place over nine hours non-stop, and although no fatigue, no backache (me who suffers) and not feeling tired shoulders. A big part of the load is supported directly on the belt and the principle seems really effective. I really recommend this bag is really very convenient. Try it and adopt it.