This is my Crumpler threeseven daily (M).
It has an inner padded bag, which can be removed. The main bag has loads of pockets.
This is what I regularly have in it:
When I pack it, I have layers:
The first layer is
The camera is a 400D and has the 24-70 f2.8L + hood attached. The other lenses in the bag are the nifty fifty , the Canon 24-105mm and the Sigma 10-20mm.
The next layer has
Flash gun and my purse.
All the filters, spare batteries and spare memory cards etc, are in the front pocket, as is a note book and pencil, lens cloth.
When the inner bag is closed, you have a huge pocket within the main flap which easily takes something A4 sized, as long as it can bend when the flap is closed.
Closed , it measures approx 12" wide, 10" high and 8" deep. It has a nice long strap (adjustable) and a thick shoulder pad.
I like it for day use...great for hols too, as I also got my sunglasses, passport and sunscreen in!
My other bag is a Lowerpro Minitrekker AW, which I also like, but the Crumpler gives easier access.