K-Swiss has signed a deal with the tennis player that holds 11 world titles and has been in second position worldwide.
The photo session for the ad campaign will show the 29-year-old star in tennis attire in hip areas in the streets of Rio de Janeiro, Brazil.
In addition to the ads, which will be launched in February 2008, Haas has also worked with the design team on the creation of a clothing line.
Haas explained, "I remember seeing K-Swiss as a kid when I was starting my tennis career and am thrilled to be associated with a brand with such a strong heritage. I am obviously excited about the performance tennis styles but also eager to collaborate on off court opportunities as well."
Jennifer Weiderman, Vice-President of marketing at K-Swiss, stated that she was very proud of this partnership: "Tommy will be an invaluable asset in showcasing our current product offerings and developing future styles. We look forward to working closely with him and are proud to have him representing K-Swiss in the upcoming grand slams."