Icelandic vodka Polstar is continuing its sponsorship of cutting edge events by backing the extreme sports festival F-F3 to be held in the UK.The UK's biggest real-snow slope (September 29 - October 1) will play host to a multinational set of medallists from the X-Games with an expected crowd of 30,000 and F-F3 will combine the very best in boarding, ski-ing and DJ's in a snowy urban extravaganza.Icelandic water claims to be the purest on earth and Polstar, Iceland's best-kept secret is made in small batches to maintain its high quality and is available in London's top bars and restaurants.