I go back to the office about 2 days a week and this has made those days so much better. I pack my lunch in a cooler and have left it there since 8pm with no problem. It's a big space that can hold full sandwiches and sides, plates and whatever. At one point I had 2 laptops and both 13 inch computers fit in easily. There's plenty of room for chargers, pens, papers and whatever. Power bank and USB function are ideal for on the go. There's even a small key fob you can attach to your keychain that secures your keys in your backpack so you don't have to search for them in the bottom of your bag. It's comfortable on my back even when fully loaded and has a chest cross strap which is great.