Lego Ninjago Battle ArenaThe masters of Spinjitzu have leveled up! This battle case arena doubles as both a storage case for the Ninjago masters to hide in as well as the supreme battle arena! Weighing only one pound, the battle cases arena's dual fighting surfaces add another level of theatre to the masters of Spinjitzu. When the victor is determined, you can neatly store your Ninjago figures, spinners, weapons and cards until the next battle. For all boys ages three and up,