I purchased this backpack to transport my Alienware 17R4 laptop and the associated gear I carry with it. The backpack is well made and fits very nicely with the laptop for a cohesive aesthetic. There are 3 major compartments within the bag and those are further segregated with pockets and dividers for all of your smaller gear. There is a pouch inside the bag meant to contain your power supply and that works nicely, eliminating that wire clutter. I current have my Alienware 17 R4 laptop and power supply, Razer DeathAdder mouse, and Sennheiser GAME Zero headset case in the bag and it isn't even beginning to fill the available space. I feel I could comfortably carry another sizable laptop, a tablet such as iPad, as well as several more mice and headsets in an organized setup. More reasonably though, you might wish to use some of the extra space to carry a change of clothes and toiletries in the likely event you will gaming at a friends house well into the morning with your complete gaming travel package.
I was a bit hesitant at first to buy a Alienware branded bag to house my expensive gaming gear given that it tends to advertise you are hauling some desirable goods. That is a choice you will have to make for yourself when considering where you plan to travel with it. Personally, I am going to friends houses where I don't anticipate being among thieves. Having this tailor made solution for hauling my gaming gear was worth it to me and I really do love the way it looks. It's got function in spades, with a bonus of being very stylish as well. I picked the bag up on sale for around $87 which I think is perfectly fair for what you are getting. The target demographic is very much owners of large Alienware laptops, so it likely won't be for everyone.