These color ballparks replace the black ink on green cardstock ones that come with the game and season releases. They are printed on special #120 "Kromkote" material, which is tear and spill-resistant.
Some seasons are not yet available...the 1960 and 2022 seasons are available now, and the 1961-1964 seasons are available for pre-order (we anticipate shipping them by 3/11/2023)!