Trampolining consists of four events: individual, synchronized, double mini and trampoline. Only individual trampoline is included in the Olympics. Individual routines involve a build-up phase during which the gymnast jumps repeatedly to achieve height, followed by a sequence of ten leaps without pauses during which the gymnast performs a sequence of aerial tumbling skills. Routines are marked out of a maximum score of 10 points. Additional points (with no maximum) can be earned depending on the difficulty of the moves. Synchronized trampoline is similar except that both competitors must perform the routine together and marks are awarded for synchronicity as well as the form of the moves. Double mini trampoline involves a smaller trampoline with a run-up, two moves are performed and the scores marked in a similar manner to individual trampoline.