Why does a cushion need a zipper at all?

Why does a cushion need a zipper at all?
For most of textile history, it didn’t!
Fabric itself handled closure.
It was stitched, tied, folded, and finished as one system.
Then, in the 1920s, manufacturing scaled.
Speed and uniformity became the priority.
Zippers and fasteners made production easier.
They were added to fabric, not built into it.
Function slowly moved away from the cloth.
But the fabric never lost that ability.
At PhoolBagan, we keep closure within the fabric.
No added elements!