The Sustainable Turn is a 24h event taking place in Sao Paulo. During this day, concerts, presentations and debates will bring people closer to the ideals of sustainability. To make such an important event possible, we needed sponsors. So, we created fifty unique and handmade sales books out of used and discarded material. They were given to key people in Brazil's most environmentally responsible companies. This year, Sao Paulo will see the Sustainable Turn's 4th edition.