Our MEGA mystery slime boxes come with 4oz slimes that are chosen at random from our store slimes. You also will receive fun mystery goodies! MEGA Mystery Slime boxes come in 3 sizes #1, #2, and #3! ♥MEGA #1 Box♥ 6-Slimes Mystery Fun Items 1-Care Pack ♥MEGA #2 Box♥ 8-Slimes Mystery Fun Items 1-Care Pack ♥MEGA#3 Box♥ 10-Slimes Mystery Fun Items 1-Care Pack