Stand-up paddleboards fulfil high requirements with regard to mechanical strength in combination with resistance to moisture, salt water and UV radiation. Up until now, they have been primarily produced using petroleum-based plastics in combination with glass- and carbon-fiber fabrics. We have developed an ecological alternative: a lightweight, durable sandwich material made from renewable raw materials. To demonstrate the material's performance, we used it to manufacture an ecological stand-up paddleboard (“ecoSUP”). In the future, the new bio-composite material could be utilized not only in other watersports equipment but also in the construction of buildings, cars, ships and trains. In the webinar, we will present the new material and possible applications.