Various Bags In Backpacks

There are  a rucksack,  a randoseru, and  a school rucksack in  a backpack.
There is also a school bag in attending school.

A rucksack is a bag carried on the back.

A rucksack has many products made of cloth, its use is various, and form and color are also abundant in variations.
Since it is a product made of cloth, it can change according to the thing which form puts in.
Moreover, many prices of goods are cheap.

The junior high school student and the high school student are using the school bag. 

When the things to put into a bag are heavy things, such as a textbook, it hangs on shoulder of one of the two. 

                                      A rucksack　and a school bag

The backpack is a rigid receptacle. 

Because, it is for the thing to put in a backpack not to change and to keep a crack from being attached. 

The origin of a randoseru is a knapsacka rucksack carried in from the friendly nation Netherlands about 100 years ago for the wealth and military strength of a country. 

                                                   A knapsacka rucksack　　　Source:National Diet Library

The randoseru has had reconstruction and improved quality continued in Japanese culture, for citizens so that knowledge acquisition and information may be transmitted certainly.