Zaha Hadid’s work, once again represented by the double cast-aluminium seat Manta-Ray Duo seating is perfectly at home in this vein, which has pursued a multilinear route of research since its distant origins. Here again, she has played with the balance between the forces at work, where a lightweight shell, created by folding a potentially continuous surface, generates a plastic, embracing form: a double chair set side-by-side. Like a compact volume, the twin-shell shape provided by the main front rises on the central axis to create an element of separation and support, an unusual armrest that is part of the overall development of the form, while at the same time leaving the chance to perceive the lightweight Y-shaped structure that makes a characteristic statement from the rear. Here the Manta-Ray calls attention to the simplicity of its structure as it unites the supports of the base with the central vertical support that is part of the single surface modelled in unitary harmony.