400 urban artists around the world have responded to the call made by Gautier Jourdain constitute a unique collection. They all deployed wealth of imagination to realize their 400ML bomb, the one they use for their daily work in the street. This unique collection showcases furniture installed in the ASSOCIATION is managed by the M.U.R. and may be presented. MAIN GOAL OF THE ASSOCIATION IS THE PROMOTION OF CONTEMPORARY ART AND PARTICULARLY OF URBAN ART.