Trying to find a bag that is lightweight with lots of compartments for easy access is difficult. This bag fits the bill. It has outside pockets for keys and cellphone and even a little zipper compartment on one of those pockets for change or whatever. On the other side of the bag is a zipper on the bottom of the compartment; which, when unzipped, works to create a panel that allows you to slide the bag over the handle of your rolling carry-on luggage. Works great when traveling through the airport. The inside of the bag is big and roomy,and has little pockets and another zipper compartment. Once you get this bag you must decide where you will put each item you carry. If you  don't put your items in the same place each time you will be spending many minutes searching through this bag. And lastly, the beauty of baggallini bags is that they last for years and you can throw them into the washing machine when they get diry. Great bag, worth the money.