This is one of the affordable diaper backpacks that I have. I love bags in general. And I feel that you should use a bag depending on what you need to carry. Sometimes I would use a bigger one. Sometimes a smaller one if I will just be out for 2 to 3 hours. After using this bag for 5 months, I have decided to make this my babysitter’s official bag, LOL. She mostly uses it now.