Massimo Duroni, an ecodesigner sui generis, shows us what precisely it is an ecodesigner does: after taking apart some chairs, he examines the composition and materials, evaluating whether or not the design is ecologically sound: use of recyclable materials to reduce the environmental impact. Commissioned by the "Leonardo da Vinci" National Museum of Science and Technology, Milan, the film addresses the infrequently asked question about what goes into the design of everyday objects.