This bag deserves so much credit for helping me survive a business trip! This was my personal item on a plane, carrying two lunchbox coolers of milk, extra pump parts, accessories, and my PISA. It was a breeze to pump in my seat with this bag, because my pump was all set up in one of the convenient side compartments and all my other items were inside the bag. The bag is HUGE, but not ridiculously, supid-looking huge. It's a "good" huge.Zippers are great quality! Two zippers on each compartment, so you can close it while still leaving your pump cord out. The secret compartments can be pushed down, so if you don't need to store a pump, you can use the entire space of the bag. So, the bag will be very functional after my pumping days are done!There's one zipper pocket inside the bag, one zipper pocket on the outside, and the two side pump compartments. A Medela PISA fits in either with room to throw in other stuff, like the power cord and extra battery pack. No compartment if you need to throw in a laptop, but all I needed was space for two lunchboxes, extra pump parts, and accessories. Another reviewer comments there wasn't a lot of "structure" to the bag, and I agree with that...but I really just needed a dedicated space for my pump and somewhere to store my milk coolers. This bag met and exceeded my expectations.Set up / Tear down of pumping is so much easier because I leave my tubing and power cord attached to my pump...it's all safe in its compartment and any needed accessories are in the bag. Very easy to squeeze in quick pump sessions with everything so handy, and discreet in a nice looking bag! When I was on my business trip, it blended in with everyone else's work bag. I never felt like I stood out carrying it everywhere I went!It is very obvious that the designer of this bag was a pumping mother.This bag truly made my life easier while separated from my son. I also use this bag daily as my work bag, and will probably do so even when I'm done pumping, because it is a good, quality bag.If you're no longer pumping, this bag would also be an excellent work bag, diaper bag, duffel bag, etc.I'm almost at my initial goal of nursing for a year and bought this bag kind of late in the game. I wish I had got this earlier, had I known how much I'd enjoy it. I've been using this bag for almost two months now and have zero regrets about purchasing it. It is a wonderful bag and so worth the price I paid!