The project is a truly inter-disciplinary initiative for the 'designed engineering' of heterogeneous fibres with variable material behaviors to create real-time responsive interior environments (furniture systems). These smart furniture systems will embody properties of real-time adaptive temperature control, real-time structural adaptability and real-time physiological support of the human body. These properties shall be fully self-regulated (devoid of external power sources) via engineering multi-layered fibre compositions, which, can sense the forces exerted by the human body and accordingly alter their physical properties. The scale of operation is chosen deliberately, considering the time-span of one year within which we will produce of a fully operational 1:1 physical prototype and scientific material-research guidelines. A research through design approach with 3 iterations: working on the yarn (U Twente + EURECAT), textile (TUE) and product (TUD) levels shall be adopted in this research. Each iteration will consist of the development of a prototype, the creation of future usage scenarios + business possibilities and a workshop to envision future requirements. In this project, prototypes and material output will be co-designed with material scientists, architects, textile and industrial designers and will be used to assess 1) design challenges, 2) business opportunities, and 3) technical feasibility of scalable multi-performative interior systems for applications such as healthcare and future office environments.