F50 adiZero - the Lightest, Fastest adidas Boot in History Circuit de Catalunya, Barcelona, 11th May 2010 - Today, adidas football superstars Leo Messi and David Villa proudly presented the F50 adiZero; adidas' lightest ever football boot, during a speed themed event at the Circuit de Catalunya in Barcelona. The revolutionary new boot weighs an astonishing 165 grams* and features industry-leading technologies, making it the lightest and fastest adidas football boot ever made.