Make a big splash this summer with this fantastic water balloon pump with 100 balloons set! This set is perfect for summer. Stay cool on hotter days and have tonnes of fun doing it! Water balloon fights provide hours of entertainment for everyone! Fill your pump with water and attach your balloon to the nozzle. Pump the balloon full of water and use the knotting tool to tie a knot! Now your ready for an epic water balloon fight! The pump also includes a pressure valve. This water balloon pump contains approx 100 multicoloured balloons inside.