Update: my partner has since employed this as a macbook sleeve. Not its intended use, but effective, so I'm bumping it up a star.The idea here is that this organizer/bag's shoulder strap (which is attached at the top of the bag on one end and the side of the bag on the other, to better wrap around a car seat) slips over your passenger seat, so that that your bag can be conveniently accessed while you drive. The problem is that the bag is just too small to be useful outside of the car. . The bag itself is essentially flat and padded like a laptop sleeve--and not much larger--a mere 11" tall x 15" wide, and less than an inch deep inside at the bottom.The exterior pockets do have deep gussets--but not on the bottom--so what they hold has to be either small or flat as well, unless you never intend to remove it from the car (and that's the whole point, right?), because if you put much inside it won't close. The bottle pocket alone is gusseted on two sides, so it will hold a large bottle, and it does have a nice strap near the top, so you can cinch your bottle in when you're on the go or loosen it for when you're in the car.The other exterior pockets--two essentially flat pockets layered atop one another--have a gusset only on one side, which means they can't hold much, but that it is easy to access what's inside--this is a great feature when you're rummaging around in a pocket while you're driving. The layer between the pockets is stabilized with the same padding of the main bag, which also means the pockets stay upright and distinct, another nice feature. The exterior pockets are the best part of the bag, and why it gets 2 stars instead of 1.If it were advertised solely as a 3-pocket auto caddy--and the price were correspondingly lower--I would give this bag higher marks. Like all Thule products (I own 4 other Thule organizers between our two cars), it is very well made and will stand up to much abuse. But unless all you need to hold is a laptop or a few magazines or papers, it's virtually useless as bag (much less as a diaper/toy bag, as suggested--you could maybe fit 3 small diapers, laying flat and side by side, or a few children's books or happy meal toys; forget anything else).Thule typically makes very sturdy, clever car organizers, but this bag has an identity crisis. It should either be simply a caddy that stays in the car, and have an extra strap to secure the bottom as well (the laptop sleeve portion would be okay for mail or maps, etc.--although who uses maps anymore?)--or it should be deeper with a boxed bottom on both the main bag section and pockets, like a messenger bag, so it's roomy and useful outside of the car, as well. As it is, it's missing the mark both ways.[For the record, I received this bag from Vine for review. Both the Vine description and the product packaging pitch it more as a bag--the box even shows it slung over the shoulder, messenger-bag style. However, the regular Amazon listing makes it sound more like a simple car organizer. Based on the packaging and the price--$10-15 more than the typical small Thule car organizer--I'm assuming the intention really is a dual-purpose bag designed for easy car access/organization, not simply a car organizer, and I'm reviewing it based on that assumption.]