Underwater XL is a longer version of a tandem bike that no one will pass by unnoticed. Two children (ideal age between 3.5 and 7 years) sit in front of an adult who steers from behind and has the overview. Despite its length, this bike is easy to steer and ride. The children can help and pedal, which provides extra motivation. But they can also rest – individually even independently – while the parent continues to pedal.