This entertaining book takes a quirky look at the world of flexible objects, those items that fold out for use and then fold back in again to save space. Per Mollerup identifies twelve principles of collapsibility and looks at examples of each in turn, before examining collapsibility in furniture of all kinds, from chairs and tables to sofas and storage. Over 500 illustrations bring together design classics, rare historical material, specially drawn diagrams and up-to the - minute gadgetry in one absorbing and inspiring album.