This technique is used to stop half high balls from short distances.
Coming forward and making himself as big as possible makes is harder for pivots and players throwing in break situations to focus at the goal.
When meeting the ball, the goalkeeper comes forward and jumps off lifting both legs as high as possible. Together with the arms and hands the ball is stopped.
World Rugby has reportedly conceded Aaron Smith's disallowed try in the World Cup final should have stood.
"It is not only useful for staff who are experienced but a valuable tool for those subject staff who have to take teams."
The variety of sessions across sports - sometimes we steal session ideas from one sport and use them with another.