Pokémon Booster Box: Gym Booster 1 - Leaders' Stadium

 Gym Booster 1: Leaders' Stadium is the name given to the sixth main expansion of the Pokémon Trading Card Game. It features generation 1 Pokémon and is themed around the first four Gym Leaders of the Kanto region. The Japanese expansion was released on October 24, 1998.

Leaders' Stadium was the first expansion in Japan to feature pre-constructed Theme Decks. 

This box contains 60 booster packs.