Pokemon 2017 SM#2+ Sun & Moon "Beyond A New Challenge" series strengthening booster box (20 packs). It was only available at the Pokemon Center and a few toy stores in Japan, starting in April, 2017. The box contains 20 booster packs. Each pack contains5random holofoil or reverse holofoil cards for a total of 100 holofoil cards (Most are reverse holofoils). This set is different from other sets. ALL CARDS IN THE BOOSTER PACKS ARE HOLOFOILS.The full set contains 49 cards plus 8 SR, 6 HR, 3 UR cards and some non-numbered energy cards (Total of 66 cards + Energy cards in the set). The series has new Generation 7 characters as well as some of the older Pokemon characters. NOTE: You will not get a full set by buying one booster box.