I bought this bag insert because I needed a bigger bag, but unfortunately women’s totes never have pockets. So this is a set of pockets that you can take in and out of your bag easily. This particular version has an insulated cooler pouch, which I use to store my breast milk after I extract. It also has a computer sleeve and a bunch of extra pockets for chargers, gizmos, doodads, and everything else that’s basically in my bag. And strapped to the bottom is a rolled-up change mat for babies.