If you organize the inside using MOLLE-capable bags, then you can quickly and easily expand your storage by just attaching those bags to the outside.
But it's "tacticool", so it's not for everybody. My Dell XPS 13 and a whole lot of other things fit into it easily. Plus there is a hard plate on the back that protects the computer from impact from that side of the bag and gives it support (it's removable).
Plus, I seem to be accumulating a number of MOLLE things from trauma kit to Leatherman to pepper spray.
Currently, my laptop messenger bag is from another defunct company, Hlaska, which is currently overloaded with a MBP 13 and minimal power/EDC stuff.
I should probably upgrade to a MOLLE bag so I can carry my backup HDD without using a reusable shopping bag AND messenger bag.
1: https://countycomm.com/collections/bags/products/mid-range-b...
They are very convenient tons of storage space, everything is easily accessible, best back support I've seen outside of really high end trekking packs and they are durable as fuck.
I've had some expensive backpacks from the likes of samsonite, they look good but they tend to age very poorly (I might be abusing them too much) and they aren't nearly as comfortable to use at the 5.11 ones.
https://www.crumpler.com/au/dry-red-no-5/
https://www.crumpler.com/au/about-us/
> The first Crumpler bag was made in the early 90s when Stuart Crumpler couldn’t find a bag that let him cycle home with a slab of beer on his back.
Stu’s solution to this common problem was a tough, handmade messenger bag – he sourced the best materials he could find and even sought the expertise of a local parachute maker who pulled the prototype apart and showed him stronger methods of stitching.
During this time, Will Miller and Dave Roper ran a courier business and needed quality bags for their riders. Seeing the potential in Stu’s bags, the three of them founded Crumpler with a handshake and the rest is history.
https://www.marketplacepulse.com/amazon/usa/crumpler https://www.amazon.com/gp/aw/d/B0118QTUKU?psc=1
I ran across this backpack at wal-mart, it's a great travel pack/day pack. It has a sleeve in the back (padded to the outside) for a laptop or camelbak, lots of pockets/sleeves inside that would fit chargers, phones, small tablet.
Loops on outside are great for carabiners/gear on a hike.
https://www.walmart.com/ip/Outdoor-Products-Quest-Daypack/51...
We have three, one was just used for a 6 night campout and came back in perfect condition.
Oh and best of all they are only $25.
I usually lug around 2 laptops, a huge USB battery pack, misc. USB accoutrements, snacks, Bose over-the-ear headphones, and occasionally a (slim model) game system in it without it being too overpacked or bulky.
Finally bought the 30l Peak Design backpack. Best thing ever. Worth every penny.
I can fit: Two laptops - HP 1040 and Lenovo Thinkpad S12 Two chargers for the laptops 1x 2 port USB charger for phone 8" Tablet 2 Moleskine notebooks 1 camera, either Sigma Dp1 Quattro or Sony RX100 2.5 USB backup drive Several batteries for the Sigma camera Audiotechnica m30 headphones All the infernal RSA tokens I have to carry USB cables, 2 ethernet cables 10000 mAh battery pack Other odds and ends... mug, access cards and what not
Also, you mention a lot of gear fits. Do you have this gear just tossed in there or are there enough compartments for the list you mention?
The is a laptop sleeve between the back of the bag and the main compartment. In that sleeve there is a divider. I believe the divider is meant to separate a 15" mac book and full sized ipad. The sleeve is large enough for my 14" laptop and my 12" laptop. Additionally, the sections you use to get in to the main compartment have padded organizers.
The bag is really clever and seems to be incredibly well built, time will tell on that.
Check out the youtube videos.
http://www.pelican.com/us/en/product/durable-travel-backpack...
Edit: Amazon to the rescue. They had a comparison chart. The Spire is 32L, Rogue is 27L
I use it to get groceries once a week. It's come on every vacation I've gone on. I've moved with it. It is not a simple work backpack. It goes with me everywhere. Really great investment.
It's got a ton of storage and it's designed to be a single-travel bag. Check out some reviews on Youtube and you'll see what I mean.
http://www.mysteryranch.com/urban-assault-pack
Makes it really easy to get down into the pack.
These days I'm carrying an eBags Professional - laptop space, center tablet pocket that can be accessed from top, pocket for files/papers, bottom hard compartment for charger, reasonably well organized pockets for pens, usb drives, etc, and most importantly for travel, it has dual carry-on handle pass throughs.
I was also looking at an Osprey: https://www.amazon.com/Osprey-Porter-Travel-Backpack-46-Lite...