kahuna 90808 mega blast inflatable backyard kids pool and slide water park with triple water cannons splash pool and climbing wall kahuna are your little swimmers up for a backyard adventure? well, kahuna mega blast is full of races, climbing, and challenges galore. it has an over sized climbing wall with a rope, a double wide slide for racing down, and a splash pool with three cannon that launch water across the water park, so watch out! this water park is perfect for ages 5 to 12 and is the hot spot this summer. get the kiddos ready to bob, weave, and slide through an awesome adventure with this mega blast water park.