| 摘要 |
PURPOSE: A backpack is provided to reduce the manufacturing cost thereof and to enable a user to change the capacity thereof. CONSTITUTION: A backpack comprises receiving units(10a,10b), a hanging unit(20), and a connecting unit(30) including first to fourth connecting members. A plurality of receiving units comprise a first receiving unit and a second receiving unit. The hanging unit comprises a seat back unit, a suspender unit, and a waist band unit and is separably connected to one among a plurality of receiving units. |
