Examples of the materials to be used in the quilts.
They would be made of durable denim, cotton canvas, and workwear fabrics so would they would hold up to wear and tear.
Riders in the elevator could lean against them with out worry. They could be laundered and rehung if they get dirty, just like a pair of work coveralls.
Just like a favorite pair of jeans, use makes the work better. Showing a record of its history.