I wanted something to protect my Alienware 17r5 laptop and hold 2-3 days of clothes while traveling. The laptop does fit into the dedicated laptop sleeve but very snuggly. I would say it wouldnt fit anything any larger. Sorry, but I didn't measure my laptop to share, although dimensions are online. The section between that laptop sleeve and the rest of the bag could house a larger laptop but then wouldnt be as padded or protected.
If you pack carefully you should be able to pack 3 days of clothes along with personal items.
Definetly a good bag for a mobile vr solution or gaming +proprietaries(console, controllers, keyboards, headsets ect)