In this action, A4. Design in detail of demonstrative textile prototypes, the prototypes for the insole and isolation material have been developed through digital lasts (in the case of the insoles), using a 3D design software, implementing the methodology of eco-design and after studying the “LifeCycle Assesment” (LCA). In parallel, the physical requirements of the insole and the isolation that will be manufactured with recycled polyester fibre have been designed and studied.