This briefcase was created for the W Case for Clarinet and Oboe players.
The W Case (hard case) and small items just fit inside the bag.

For the Flute player, It has a B foot width and can accommodate alto flute up to C pipe size.
It can hold a piccolo and other 2 flutes side by side.

In addition to the two-handled handle,
the bag can be carried on the shoulder or even on the back
with the two shoulder belts.