Read the text and answer questions 18 to 22.

    When I just hang out in a mall one day, I saw a very beautiful bag. I love this bag at the first sight.

    This was the first time I've spent much money on a bag and I don't regret it.

    The bag is wonderful. It is made of thin but strong leather. The weight is light and the size keeps it from getting stuffed with junk. It has a long shoulder strap that I like because it keeps the bag hands-free. Its neutral color is fun and sporty. The design is simple and well-made.

    The bag is very functional. It is the perfect size to carry a cell phone, a pocket sized wallet, a small book, a pack of gum, and pens. It also fits well into my laptop backpack for bike commuting to school. This bag also has more pockets inside so my small items don't all fall to the bottom. In overall I really satisfy with bag.

What makes the small items of the writer not falling down in the bag?