I bought this backpack to use as a carry on for my 7 week stay in the Philippines. I needed to bring two laptops with me and this backpack worked fantastic. I was able to fit both laptops, one 17" and one 15". I put the 15" in the sleeve and the other just in the laptop area. I also fit 3 days worth of clothes and toiletries as a "just in case", phone and laptop chargers, 2 portable chargers for my phone and other small electronics, a large pair of headphones, and all my travel documents and necessary items, and there was still plenty of room left. This thing wouldn't be good at all for commuting because it's just too big for that, but I could easily fit a weeks worth of clothing in this bag if I was travelling with no computers. Even with a laptop, I could probably fit 4 to 5 days of clothes in here no problem. I was hesitant on this because I've never paid this much for a backpack, but I do not regret my purchase at all.