This box includes 24 toxic zombies and 6 additional spawn cards to include them into any Zombicide base game.
Sculpts of the zombies are from the Zombicde: Toxic City Mall, although three exclusive sculpts are included.
Zombie sculpt breakdown
--15 Toxic Walkers (5 of a mix of 2 Box of Zombies only sculpts)
--6 Toxic Runners
--3 Toxic Fatties (2 of the Box of Zombies only sculpt)
The Spawn cards come with a higher density of Toxic zombies than Toxic City Mall's deck.