I've finally found the one!
I’m a physician researcher currently in a masters degree program. Needless to say, I carry around A LOT on a daily basis. I’ve used a tote bag for the last few years and now have neck and shoulder issues. I’ve searched high and low for a backpack that would meet my needs AND THIS IS IT!!! I have the larger size and it is incredibly roomy. Fits all my books, folders, 13 inch laptop, iPad, 750ml water bottle, coffee mug, AND lunch tote with room to spare. I’m so impressed. The best part is that the profile of the backpack is slim and I don’t feel like I’m carrying a gigantic pack. And bonus is that the company practices sustainability. So happy I found this!