Like many controversial artists, Ai Weiwei is pushing the boundaries of art and activism. Ai actually spent over a decade in New York City during the '80s and '90s, learning about Western art techniques as well as taking in American culture. The Chinese artist is the latest to join hands with The Sk8room for a series of skateboard decks. Three iconic designs by Ai, along with his famous phrases, are printed on the bottom of the wooden boards, each of which is hand signed and numbered by the artist. Each style is limited to 150 editions, and is up for grabs in their online shop. Furthermore, 20% of the proceeds go towards the non-profit NGO, Skateistan.