A Double Kong is a type of vault. It is similar to a regular Kong, but is used to get over two obstacles (or one long obstacle). The approach and takeoff is exactly like a regular kong, but rather than letting one's feet touch, the traceur pushes off twice. It used both in Parkour (since it is an efficient way to get over gaps) and in freerunning (since it is visually impressive). There is also a variant known as a triple kong were the traceur pushes off three times rather than two; however, this is a very advanced move and is rarely attempted.