Material -Plastic, Filling capacity - 1.5 Liters approx. water gun with backpack tank and adjustable straps- It is enjoyed by children over 3 years old. With water storage capacity so that the children do not need to be recharging the backpack all the time. It is ideal for outdoor use pool or beach. The gun is connected with a hose that in turn connects to the backpack that stores the water-it has pumping action.