I bought the large version of this (13 inch) for my Madewell Transport Tote. I absolutely love it. It fits all my stuff (wallet, Lily Pulizter Calendar, glasses, pens, makeup case, iPad, and my MacBook Air (in its sleeve on its side.) I don't think it's a full 13" long, as there is room to slip my water bottle where it ends and the tote wall. But that's ok! Because that space makes a nice spot to nestle a water bottle without it tipping over.

Without the organizer, things are just a jumble in this tote. Now I can find what I want. The side zip pockets are perfect for storing loose papers until I can get home.

This bag is fantastic. It's even roomier than I expected, and the strap extends far enough to sit low on my hip (I'm a big woman so this is a huge deal for me.

It's the perfect size for anyone with a lot of stuff to carry but also dislikes carrying a messenger bag or other large bag.

It looks and feels very durable and stylish. I will probably be using this purse exclusively this year. The color is a much richer black than pictured and completely saturated, whereas the picture makes it look a bit faded or stonewashed.

When you set it down the bag sits upright without folding in on itself.

Tons of pockets so you can organize things and keep them separate.

I actually fit two kindles easily in the back pocket. The side pocket is large enough to accommodate a full-size pair of shades or a mini umbrella.