Almost PERFECT!I am a professional speaker and author. I have to travel a lot and I hate losing things and not being able to easily access items immediately. I don't have a professional camera, but I do have several pieces of equipment, including professional microphones and a GoPro with several attachments. I also have several other personal items that I like to have easily accessible.I use it as a backpack. I have never used it as a "sling"For all practical purposes this bag works better than every bag I was able to find in big box stores like Best Buy, Wal Mart, and Target along with every large or small professional photography store there is in my city (population 500,000). I literally went to multiple locations of each store comparing every bag they had. I also spent a minimum of 10 hours doing research online and reading reviews of at least 2 dozen bags prior to settling on this one. I still get excited about how "almost" perfect it is for every use that I need it for.I say "Almost" because there are just a few things lacking from the construction. I feel that if these had been included then I would have a luxurious bag instead of just a really great bag. I will outline those briefly and then explain what is in this bag on a daily basis (I take it everywhere). I have provided photos so you can also see for yourself.***AREAS FOR IMPROVEMENT***THE STRAPS: The top part of the straps is of good quality, but the bottom part where it becomes adjustable transitions into a cheap strap. I find that this is slightly uncomfortable - mainly because I often rest my hands behind the straps while walking. My hands end up on the thin cheap part which is very uncomfortable. They attempted to remedy this with a pad that slides around the adjustable section, but it just doesn't stay in place or do any good. My old JanSport backpack that I bought for attending University in 2002 has higher quality straps that are comfortable for this and I still use it for going to the gym. I also used it for all of my traveling until I recently bought this Case Logic bag.THE OUTSIDE COMPARTMENTS: There are only two "small outside compartments" that are accessible without opening a main compartment. One of them is filled with the rain cover so that leaves only one compartment. I wish there were one or two more, along with an elastic section on both sides where I could put a water bottle.THE STRUCTURE: This is not really a negative. Actually, it is the structure of the bag that makes it so useful and safe for all of my gear. BUT when I was visiting a dental college at a university in Monterrey, Mexico last week someone told me I look like a boy scout because of my "gear bag". lol I don't mind though, it is sooo worth it :)THE LAPTOP COMPARTMENT: This compartment has plenty of room for a standard laptop. I'm guessing you could fit a 15" MacBook Pro comfortably. But that doesn't leave room for anything else like paperwork, folders, etc. This is a downfall for me as that means I won't be able to comfortably upgrade my 11" MacBook Air without losing the ability to carry a folder for taking notes and carrying documents.***PRAISE & WHAT'S INSIDE (see photos)***THE TOP COMPARTMENT: This compartment comfortably holds 3 books, an external hard drive, a bottle of powdered tea, a container of pre-workout, and my hard glasses case. It is also a catch-all when I'm traveling for things like receipts and change. When I go to sleep at night I put my phone and wallet in here as well so that I always know where they are when I get up no matter where I am traveling. There is a zipped pocket in the lid of this compartment where I put an extra wall-plug for my USB cords. It doesn't seem to be very practical for much more than that or some papers. I wouldn't mind this compartment being slightly larger, but I don't think it is worth complaining about. I could still probably shove a light sweatshirt in there if I really tried.THE LAPTOP COMPARTMENT: I keep my macbook air and a thick folder in there. The compartment extends the entire height of the bag so I am also able to throw an iPad Mini on top of them. The iPad Mini is in a case so it is a tight fit, but still works. As mentioned above, I wish the compartment was a bit thicker so I could have a larger laptop along with my folder, but it works for my current needs.THE SIDE POCKETS: One of them has the rain cover in it so I left that out of the photos. The other one nicely organizes my headphones and a USB cord. I could probably put a little more in there if I wanted, but I prefer to keep it clean and organized so that I don't have to fumble to get my headphones or USB cord out when I want them.THE MAIN FRONT COMPARTMENT & 3 WAY ACCESS: The cool thing about this compartment is that it is adjustable. For photographers this means that you can fit up to medium sized lenses attached to the camera body along with other lenses and small equipment pieces. For me, I adjusted the dividers to create several separate compartments. One compartment is accessible from the "quick access" side pocket that you can access by swinging the bag around while keeping it strapped on your shoulder. I keep my GoPro, extra batteries, and the waterproof case in here. This makes it easy to grab the GoPro when I'm on the run, wanting to grab a cool photo in an airport, etc. (the same use as professional photographers - it works great and is super handy!). In the larger opening (you have to lay the bag down to open it) I keep extra Go-Pro equipment, connectors, etc. I even have some extra space that I haven't found a use for - in the flap of this compartment I keep my Logitech 8900 Professional Presenter Remote (highly recommended!) along with an extra adapter or two for connecting my laptop to different types of projectors. In the other "quick access" side door I keep my laptop charger, another fitness supplement container, and my professional microphones that I use when speaking at conferences. The cool thing about this is that they are organized. They don't float around in a big bag so I don't have to search for them. I know where they are every time.THE TRIPOD CARRIER: I don't have a main tripod yet, but I do plan to get a "selfie stick" for my GoPro and I think it will fit there just fine. Based on research that I've done, it is best to have the tripod in the center of the bag (like this one is) so that the weight of the tripod is evenly dispersed. So, if I do transition to more gear in the future, I think this will still work for a long time - as long as it is not a big heavy professional tripod that sticks out from the top of the bag an extra 20 inches.THE ZIPPERS: They are a good high quality. No issues so far and have been using daily for about a month. I thought there was going to be an issue at first with the top compartment. Because of the shape of the compartment the zipper has to zip in the shape of the curve of a roller coaster (it is not a straight line). It was a bit tight at first, but after using it several times it loosened up and hasn't been a problem.THE ADJUSTABLE STRAPS: Each strap on the bag is adjustable. They did a nice job of providing Velcro in just the right spots to be able to tie up the extra slack in any of the straps (this is very nice). It prevented me from having to cut off the excess length in any of the straps and makes it look nice and neat.THE ADJUSTABLE INSIDE DIVIDERS: The inside is a nice yellow color which makes it easy to find things. The contrast is great. I wouldn't want a bag that was all black when I'm searching for small adapters for my GoPro, etc. The dividers are a heavy duty Velcro that stay in place once they are set. There is one main divider that separates the lower compartment from the top compartment. I think that if you wanted to you could probably adjust it lower so the top compartment is larger. I haven't needed to yet.THE BOTTOM OF THE BAG: This is nice and sturdy. It is flat and formed so the bag will stay upright (as long as it is not top heavy from a filled top compartment and an empty bottom compartment). There is also a small rubber surround around the edges which I'm assuming helps prevent moisture from seeping into the gear compartment.THE PAD ON THE BACK OF THE BAG: There is a nice comfortable pad that adds extra protection to your laptop while adding extra comfort to your back while carrying the bag. I believe it also helps create small air pockets to minimize sweat build-up.FITTING IN PLANES: The bag is so sturdy/structured that I was afraid that the die-hard airline staff might not let me keep it as a carry-on and force me to check it at the gate. I have been on 6 or 7 flights since I got this bag and I have been able to keep it with me every time. This has been on at least 3 airlines, including a Mexican airline. The bag fills up all of the space under the seat in front of you, but it fits. The one exception was on the Mexican airline where their under-seat storage was shaped differently than every U.S. airline that I've ever been on. It wasn't a problem because they had ample overhead storage space.