To provide a shoulder bag for everyday use which can be easily used as a disaster prevention hood at the time of unforeseen emergency such as an earthquake disaster.

A shoulder bag comprises: a bent part (3) folded in a bag body (6) to which a shoulder strap (1) and a handle (2) are attached; a mobile phone pocket (4) and a valuable pocket (5) provided on the bent part (3); a zipper (7) provided on a side face of one side; a detachable inner pouch (8) with a shoulder strap, provided inside the bag; and a head stopper (9) provided inside the bag.