Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: size of bag?
Document: I love this bag. I love all the compartments in this bag. Also love the velcro options inside, I can make the pockets the size that I want.
I suppose if I add some more lenses, then I would get the next size up. I could probably fit a macro lens in this bag if I just moved some of the misc caps, filters to one of the pockets on the outside.
I bought this bad because I am getting into dslr photography. The size of the Canon Deluxe Gadget Bag 10EG is good for me. I am able to store my Canon 60D, Canon 100-400mm telephoto lens, Canon EF 24-105mm lens, and a couple attachments inside the bag. The telephoto lens is large and takes up 30-35% of the inside. The 3 pockets are nice to because I can fit the batteries, cords, and misc small items.
Perfect size, great workmanship, and fast shipping. I am a beginning photographer and this works perfect for all my stuff with out becoming so bulky that it is a pain to carry around
Other reviewers have been nearly consistent here in praising the quality of the Canon 10EG. Many, however, have expressed disappointment with its size saying that it holds far less than Canon's blurb suggest.
Holds my DSLR with 18-135 telephoto mounted a second telephoto & a couple of standard lenses plus all the other gear I carry in a well protected fashion. No complaints it's just the right size. Well maybe one, it could have a Pentax label on it.
Love the products, and don't have to worry about my stuff getting banged around in this padded bag, Thanks a lot! !
The bag is very small one cam. 3 lens that is all. Very well made. If you need a small bag it is great.
Excellent bag to carry my camera (s) and all the items and attachment to it - the prices was amazing and it serves the purpose of what I wanted to.
And its price here on Amazon is half or a third of what I would have expected for a bag this well designed a well constucted. Wonderful!
Answer: The footprint of the bag is approx. 18" wide by 10" front to back (including pockets).  I carry my camera (w/55-250 attached) positioned with the lens pointing away from me, in the center of the bag.  This leaves room for 4 divider quadrants big enough for 3 lens and the external flash.  Great bag for an amateur like me.