Protect the glasses of the little clients
The school backpack is often a messy pile of various types of objects: in addition to school books, in the backpack we find snacks, water bottles, games to show to classmates during the break. This is why it is important that fragile and delicate objects such as glasses are protected from accidental bumps or scratches, thus avoiding to break them. When the bell rings, children are often in a hurry to get home and don't pay attention to how they put things in the backpack.