The Nerf Super Soaker Mega Dunk-Fill is a larger water blaster with a translucent 1-liter water tank that fills instantly by submerging the tank in water, without the need for pumps or hoses. Simply pump the handle to release a longer-lasting jet of water than smaller capacity models in the same line, extending the fun between refills. It's a great option for those looking for a water blaster with greater autonomy for summer group play in the garden or on the beach.