satchel
US /ˈsætʃ.əl/
UK /ˈsætʃ.əl/

1.
a bag carried on the shoulder by a long strap, typically made of leather or canvas and used for school books or a laptop
:
•
He slung his leather satchel over his shoulder and headed to class.
•
The artist carried a large canvas satchel filled with paints and brushes.