On the last stroke stretch for the wall with both hands and drive the leg kick. Touch the wall with both hands and lift the knees towards the chest and place both feet on the wall. One arm then moves forward cutting underwater, the trailing arm is taken over the water surface and the hand cuts into the water to meet up with the leading arm. As you push off the wall underwater, stretch down the pool with hands and feet held together to develop good streamlining. Before full stroke swimming is resumed, three or four dolphin leg kicks are executed, to a maximum of fifteen metres within the laws of swimming, as greater speed can be found whilst underwater when good streamlining is achieved.