SNK/AOT: 3D Manuever Gear Inspired BackPack

So... I've been pretty obsessed with Shingeki no Kyojin/Attack on Titan lately.
But I don't know why I haven't seen any SNK/AOT backpacks...or at least ones that look like 3D maneuver gear. I thought the upper half of the harness looks like backpack straps ._. so I suddenly got the idea.
And it's almost that time of year anyway back to school...so why not.
I had some trouble trying to figure out decent color schemes =__=.
If you can ignore my chicken scratch. (Are just notes)