A backpack also known as a rucksack, is a bag carried on a person’s back with shoulder straps to secure it and balance the weight on the person’s body. It is used as equipment for children in school & various outdoor activities as well such as hiking, trekking or even general travel.
It is made of various materials depending on it’s use. For travel associated, backpacks are even available in waterproof tough cloth with reflective panels and padded shoulder straps and a rigid frame whereas for everyday use backpacks are lightweight, frameless with padded or unpadded straps.
Backpacks of this sort can be used used by children to and from school, as school bags.