A daypack is a smaller, frameless backpack that can hold enough contents for a day hike, or a day's worth of other activities. They are not large enough for average wilderness backpacking that use full-sized sleeping bags and backpacking tents, but may be large enough for ultralight backpacking. Padded or unpadded waist straps may be provided to distribute weight across the body.
School bag
In many countries, backpacks are heavily identified with students, and are a primary means of transporting educational materials to and from school.[6] In this context they are sometimes known as bookbags or schoolbags. The purchase of a suitably fashionable, attractive, and useful backpack is a crucial back-to-school ritual for many students.[7]
Typical school backpacks generally lack the rigid frame of an outdoor-style backpack and include only a few pockets in addition to the main storage compartment. While traditionally very simple in design, school backpacks are often made with padded shoulder straps and backs as well as additional reinforcement to hold large numbers of heavy textbooks, as well as safety features such as reflective panels to make the wearer of the pack more visible at night.
Backpacks are sometimes worn as fashion accessories, in which they perform the same function as a purse.[7] Some such backpacks designed specifically for women are no larger than a typical purse, and are generally associated with younger women.