I pretty much use this as a laptop/drawing tablet bag.It's a very big bag. I carry a 15 inch laptop and 15 inch drawing tablet inside and there's some extra room at the top (i think it's advertised as 17 inches in height ). The top rectangular section works great to carry all my power cords and such. The section directly beneath i use to carry my external dvd drive, my "non essential (yet still pretty essential)" cords pack (usually has a few usb cords, thumb drives, etc).I was disappointed that the makers of this bag opted to replace an admin section with a few strips of velcro for a ccw holster. I won't down rate this bag because of that, because there is a small section in the secondary compartment (but nothing like the admin compartments that appear in the 5.11 rush bags, and it seems like chintzy admin pockets are the standard as of late) which is perfect for carrying a power bank and the pen for my drawing tablet. Over all this is a great bag, works well for my laptop and drawing tablet, just too big for an EDC bag (unless your day to day activities call for carrying a lot of gear). Even though I'm a little disappointed that I can't use this for what I was intending, I'm glad that I could back veterans,AS promisedBought this for my husband for Christmas and he loves it! The only thing he said he wishes there was a more accessible outside pocket for keys. But very good quality!!Great bag. Holds my CZ Scorpion and pistol without issue.Love this pack. It is huge and perfect for traveling or hiking and backpacking. I needed a larger pack (I usaully carry the 24hr pack) for longer trips and this is perfect! Highly recommend DDTMy husband got this to carry as he goes back to college. He loves it!Love My DDT 2 Day Assault Pack. Zippers àre great, and pull smooth with no hangups. Bag is comfortable, and interior compartments are finished nice.Bag feels like it was made to last!Arrived promtly and on time.Well worth the purchase!