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.

Pretty roomy. Nice quality. Probably could have got away with one size down. Overall nice bag.I fit a lot of stuff in it as you can see from the last picture. Felt someone may want to see it in black.

I am happy to say that this bag holds up SO WELL. I received it as a present 4 years ago. Since then I have used it literally every day, about 8-10 hours a day. It is constantly getting picked up, swung in and out of my car, thrown around in my trunk, worn all the time, carried everywhere, and it is just as reliable as the day I got it. I've taken it boating, horseback riding, on planes, you name it. A cat chewed on the bow and it survived just fine. I finally bought a new one becaude the hooks for the shoulder strap eventually gave out. I used carabiner hooks which worked great, I just decided it was worth a new one. I'm telling you, this bag has held up for probably 14,000 days of rough use. 1st picture shows the old one and new one, 2nd shows carabiner clip I put in, and 3rd shows new bag's clip. It wears like natural leather. No issues with cracking or fraying.

The shoulder bag was roomy and looked to be a quality product; my wife picked it out and was happy with it when it arrived. That said, it wasn't "made for moms" - as she put it. With less than a month of fairly standard use, not abuse, the shoulder strap began to fray in a way that has made the bag virtually unusable for its intended purpose. We expected the product to last a bit longer than a couple of weeks.