You will receive 1x Booster Box of Heat Wave Arena. Products will ship within 24 hours of purchase. If choosing the Live Opening option only Holos and higher cards will be sent. 
There are 92 cards in this set! The expansion features more Trainer's Pokémon, a game mechanic originally introduced in the Gym Heroes expansion. The booster pack for the expansion features Arven's Mabostiff ex, Ethan's Ho-oh ex, Misty's Lapras, and Cynthia's Garchomp ex!