Welcome to MR BUS CO!
Great seat back organizer made from Brown Beige Plaid Westy fabric found in bay window buses. Don't be fooled though, these work in other cars too! Two pockets at the top, middle and bottom are each one wide pocket with a snap button in the middle. These are heavy duty and well made pieces.
They measure 19" tall and just over 17" wide.
Green shown as example installed.