Pokemon 2017 SM#4+ GX Battle Boost series booster pack. It was only available at the Pokemon Center and a few toy stores in Japan, starting in October, 2017. Each pack contains 7 random cards (6 reverse holofoil cards plus 1 holofoil GX card). All the cards in the pack are holofoils. The full set contains 114 cards plus 6SR, 3HR and 2 UR cards. The series has new Generation 7 characters as well as some of the older Pokemon characters.
Condition: Brand New. Factory Sealed.