Double Happiness responds to the society of materialism where individual desires seem to be prevailing over all. This piece of urban furniture, by being nomad, allows the reactivation of different public spaces. It enables inhabitants to reappropriate fragments of their city. They will both escape and dominate public space through a game of equilibrium and disequilibrium. By playing this “risky” game, and testing their own limits, two people can experience together with a new perception of space, void, lightness and recover an awareness of the physical world. This hybrid object, meaningful only through the body, being all at once physical and social may be a tool for a collective experience of fragility.