During the day players will wear the t-shirts in either training or matches with the hosts England set to face Wales, while South Africa take on Samoa and Italy clash with Canada.

Additionally,  match and tournament officials will also sport the t-shirts, while dedicated promotion will take place in stadia and across social media.

The programme is recognised as one of the leading anti-doping education programmes and has supported more than 13,000 players since its launch in 2005, with the aim to assist players and support staff in understanding their responsibilities regarding keeping clean.

Additionally the programme highlights the dangers to both careers and health by taking shortcuts by using hard-hitting videos which feature players who have been banned for using prohibited substances.

World Rugby Chairman Bernard Lapasset hopes to use the tournament’s global stage to educate the next generation of rugby stars and highlight the governing body's  zero-tolerance approach to drugs cheats in the sport.

"Doping is the biggest threat to the integrity of sport and the fight against doping begins with education,” he said.

“Rugby is a sport built on strong character-building values of respect, integrity, passion, discipline and solidarity and every player has the right to complete on a level playing field.

“'Keep Rugby Clean Day' is a key element of our education strategy to deter doping and promote the importance of a maintaining a healthy, balanced diet.

"The Rugby World Cup is the biggest sporting event of 2015 and the biggest event in the UK since the London Olympics and we have a golden opportunity for the world’s top players to play their role in educating and informing the next generation of rugby stars, support staff and parents in order that they are equipped to make the right choices and are in the best-possible position to compete and win clean."

Anti-doping education has been made mandatory for participating teams at all World Rugby events and each of the 620 players, along with their team management, have taken part in education modules prior to the World Cup getting underway on September 18.

Keep Rugby Clean ambassadors David Pocock of Australia, Sam Warburton of Wales and South Africa's Bryan Habana have all encouraged their fellow competitors to get behind the campaign.

It has also received support of World Anti-Doping Agency (WADA) Athlete Committee member and former Argentina captain Dr Felipe Contepomi and WADA director general David Howman.

"By hosting its Keep Rugby Clean Day at Rugby World Cup 2015, World Rugby is once again demonstrating its strong clean sport credentials,” Howman said.

"Educating and informing today’s rugby players is important, but it is only by carrying the preventative message to the rugby players of tomorrow that we will be able to level the playing field fully and ensure that sport is competed fairly and without its integrity being questioned.”

UK Anti-Doping have been appointed to deliver the 2015 Rugby World Cup anti-doping testing programme.

Earlier this week, their chief executive Nicole Sapstead revealed  they may speak with Interpol and French prosecutors regarding doping allegations concerning triple European champions Toulon, should any player being investigated be due to take part in the tournament.

Information on World Rugby's testing programme and educational resources can be accessed by clicking here 

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