Designed by Sophie Mensen and Oskar Peet from Dutch studio OS & OOS, produced by Please Wait to be Seated, we revisit those beautiful, '50s inspired fabrics manufactured by Kvadrat for Raf Simons via The Keystone chair. Taking its form from the three elements of a Roman bridge, which as we all know are the spanners, the elemental building blocks and the keystone itself, a combination of materials are in use. Concrete, ceramic and rubber, none of which immediately scream comfort, come together to form a piece whose beauty lies in its sculptural lines and curves rather than back supporting properties. Covering in a contrasting selection of Simons' heavyweight textiles, royal blue, a melange grey and marshmallow pink lend the chair a playful finish. Acknowledging the product's conceptual nature, Mensen and Peet comment  "as far from a commercial product as it could get...we almost see that chair as a pure investigation in construction, form and function." While the chair is currently unavailable to buy, find your nearest Kvadrat by Raf Simons stockist here.