This is just what I needed for work where my bags must be checked upon exit, and this saves all of us time! It seems pretty sturdy, and is definitely big enough to carry a large water bottle, lunch and an extra pair of shoes. My only complaint is that there are no inner pockets for all my odds and ends. There is only one on the outside and another smaller one, perhaps for an ID card. This was not in the description but it comes with a removable base for more stability, which makes it more versatile for what you're carrying.