If something is scrubbable, it means it can be cleaned by scrubbing it with a brush or a sponge.
Scrubbable things are usually easy to clean and can handle a lot of scrubbing without getting damaged.
Examples:
The walls in the kitchen are scrubbable.
I need to find a scrubbable marker for the whiteboard.
The scrubbable floor is easy to clean.
I wish my clothes were scrubbable so they wouldn't get dirty.
Her superpower is having scrubbable skin that never gets dirty.
I wish my dog was scrubbable so I could clean him easily.