In an interview with Hot 97's Angie Martinez this past November, Kanye announced that he signed a deal with Adidas because it would provide him with royalties from the merchandise he releases. And this would also help him provide for his family.
"For 2014, we welcome to the adidas family one of the most influential cultural icons of this generation, Kanye West. Well known for breaking boundaries across music, film and design and partnering with our history in street wear culture and leading innovations in sport, we look forward to creating a new chapter. Details to follow."