Adidas 'haka' by 180 Amsterdam

Adidas has launched the latest instalment of its "Impossible is nothing" campaign, in which four New Zealand All Blacks explain the meaning behind the Haka, the Maori incantation performed by the team before every game.

The 60-second ad, created by 180 Amsterdam, stars All Blacks captain Richie McCaw, Dan Carter, Rodney So'oialo and Rico Gear.

The ad coincides with this year's Rugby World Cup, which the All Blacks are favourites to win.

Previous sports stars to appear in the "Impossible is nothing" campaign include footballers David Beckham and Lionel Messi, and Olympic swimmer Ian Thorpe.