I love having a compartment for everything, and this bag has all the compartments I need inside and out plus more. I have it in brown (also comes in red, black, teal, pink, grey, and green), which coordinates with my stroller and makes it possible for my husband to carry it without feeling weird.
It has insulated pockets for bottles (milk for James & Poland Spring for me), a large ventilated pocket for clothing, and adjustable straps for carrying and attaching to the stroller! My favorite is the tiny zippered compartment at the top which I stuff with emergency pacifiers! There are also cushioned compartments that are perfect for your camera and phone.
I know this bag is a bit expensive ($92.95)- but I truly love it!
You can get it here!