A school bag as such is a bag that is used to transport different material for school - books, exercise books and pencil cases - on the back, just like a backpack. There are different familiar english names: book bag, school rucksack or school backpack. What is important when buying a school bag for first-graders? Physiotherapist Melanie Gabriel answers two important questions. How should the perfect schoolbag look like? On the one hand the perfect school bag should be ergonomic, especially for the backs of children, meaning that the weight is distributed, and on the other hand it should “grow along”. Another important point is the visibility. Sri ragavendara bags are best school bag manufacturers in chennai.