First and foremost, the reason I purchased this backpack was to have a SAFE way to carry my Asus G703 Desktop Replacement laptop around. I preferred comfort, but my highest priority was safety of my expensive oversized laptop. (My Laptop, while closed, is 17" by 12.75" by 2" Thick while closed. Yes, it is HUGE!)The backpack has a BIG sleeve for a laptop, and the sleeve comes with padding AND protective bumper-like material for the front, back, and bottom of the sleeve. This protects the laptop from being damaged while setting the bag down. VERY well built for this purpose. My number one priority = FULFILLED. There is even enough room in the slot for me to go ahead and put the laptop into a sleeve to further protect it, which should get here today. It should fit, and if it does not - I will come edit this review!Looks ->The backpack is very durable LOOKING. The material choice give you a feeling of "That looks pretty rugged!" when taken at first glance. A Closer inspection reveals good workmanship as well as a pleasant design of durable materials. I found no cosmetic flaws on mine when delivered. I have used it for over a week now, and I have used it heavily. I am constantly picking it up and putting it down in class, in my truck, in my house, etc etc. The looks are unaffected - it does not get dirty/dingy looking very easily.My favorite looks for this bag : The handle on the top is an strong metal-backed handle that has a nice pattern built around it. I also LOVE the look of the inside parts of the laptop sleeve with the BEAUTIFULLY done looks and coloring of the padding. Finally, the bag looks MUCH MORE SIMPLE than a lot of bags, but this DOES NOT take away from its functionality.Functionality->The straps are comfy and adjustable, and they stay in their fixed adjustment during use. This is more than I can say for some more expensive bags...The bag is strong, this is a functionality because if you are using it in environments where the bag might face some tougher conditions or abrasive surfaces - it should hold up nicely.The insides of the bag come with MANY pockets and sleeves to put your various pencils, computer mice, power brick, phone, etc.There are THREE main compartments:The front-most is the smallest, but is larger than the average front compartment of a laptop. It comes with a built in sleeve that is about 5" by 6". The sleeve front has pockets for pens/pencils and a calculator. This compartment also comes with a built-in detachable key chain. Again, this front compartment is actually VERY LARGE. The opening to the compartment is only about 3-4" lower than the other main compartments.The middle-most compartment is separate from the laptop sleeve compartment. It is MASSIVE. It is about 5" deep, and as wide as and tall as the backpack. It is the largest volume compartment. It comes with a smaller top sewn-in sleeve that can hold a phone or calculator (About 4-5" wide by 4-5" deep) and two smaller sleeves mounted to that that can hold ~1.75" and 2.5" wide by about 3" long objects. This main compartment is HUGE (Yes, I had to say it again.) If necessary, I could probably fit another 2+ huge laptops in this compartment too (no sleeve or extra padding, thought)The Laptop compartment is against the back of the laptop, and is its own seperate compartment. It contains the laptop sleeve with padding. The laptop sleeve has two mesh sleeves on it that can hold peripherals and whatnot. The are half the width of the laptop sleeve and about 2/3 the length. The laptop sleeve is ~15" or so deep, so for those bigger laptops, some of it will be out of the sleeve. The sleeve comes with a velcro elastic band to hold the laptop in place. The compartment is only about 3" deep, so you can still fit a book in between the laptop compartment and the middle compartment. If the bag is fully packed, though, don't expect to cram stuff in there. It still is pretty spacious.Each compartment has its own zipper. The zippers do NOT go down to the bottom of the bag like some of the newer 'TSA Friendly' bags that allow you to just split the thing open to allow it to be searched. This one is the opposite - the zippers end, and the bag only splits a lit more about halfway down the length of the compartments (The front compartment has the largest % zipper opening. It is about 2/3 of the way down.The whole backpack has padding built into it in the skin of the bag, and not just in the laptop and back padding portions. The laptop compartment areas are extra thick, too.Comfort-->This bag is pretty comfy! It has that extra support belly strap thing, but it does not support larger frame or weight people. The belly strap has padded sections with zipper packets on the side on EACH side, left and right.The padding between the laptop and you is pretty thick. At least an inch. The foam for your back is extra soft and is breathable. This foam is backed with the sturdy foam against the laptop AND THEN the extra foam pad protectors for the sleeve.I find it VERY comfortable and it feels sturdy on my back.Overall:GREAT BACKPACK FOR YOUR EXPENSIVE DESKTOP REPLACEMENT (HUUUUGE) LAPTOP!!!!!!!!Worth EVERY Penny. If it wears out, I will buy another.