I love how sturdy it is. I use it for college and it is very stable for all the nursing books it holds. Cons, it barely zips after I put my 17 inch laptop in, but it does. It does still hold both the laptop and a surface pro as well as all those books, a drink, note cards, and misc needed.
My favorite- I can use it to travel as a carry on as well, so that is why I picked it. VERSATILITY!