With a hidden zipper pocket on bottom of back side for dirty item quick storage, this backpack is a must have for any mom who wants to get out and explore the world. (blog.guguguru.com)
You'll probably want to bring along a plastic bag to put dirty items in, as you likely won't have opportunity to wash them until you get home. (momtricks.com)
It is most often used for storing dirty diapers but can also be used for storing other wet or dirty items as well. (gentlediapering.com)