Pokemon XY8 Breakthrough Booster Box! - TCG English Card Game All new material/polyester/Nylon/POM Made in USA Release date: November 04 2015 Each box contains 36 booster packs, each booster pack contains 10 random cards from the breakthrough master set! One world of technology, one world of nature, and all the wonders of break Evolution are yours to explore in the Pokmon TCG: xybreakthrough expansion! These new Pokmon break come from Twin worlds, home to Zoroark break, Mega Mew two x, and Mega Mew two Y An amazing discovery! Pokmon break Evolution opens a new Path to power that builds on a Pokmon's existing strengths and creates all-new battling options!