Special spray to mark out distances at free kicks being used in this World Cup . Fair Play gave go-ahead after successful tests in junior tournaments . The spray quickly disappears after being used by referee . Due to its properties of butane , isobutane , propane gas , water and other chemicals , the line on the pitch made by the spray quickly disappears . billions FIFA was developed by a former German amateur player .
Special spray to mark out distances at free kicks being used in this World Cup . Fair Play gave go-ahead after successful tests in junior tournaments . The spray quickly disappears after being used by referee . billions FIFA was developed by a former German amateur player .