Birkenstock X CSM - Birkenstock worked with Central Saint Martins MA student Alecsander Rothschild for a year of product development to create these Bukarest sandals, which draw on the latter's archival research into the history of the brand. They feature a clean-lined yet sculptural detachable panel inspired by French-Romanian sculptor Constantin Brancusi and are set on a comfortable moulded footbed and leather sole with an anti-slip rubber heel.