Due to its three-dimensional, elastic and flexible properties the weft-knitted technique is especially functional within the realm of performance textiles. Within the knit one can create flexible and movement-specific structures fitting to the body without waste material. A capability which is valuable when creating costumes for dance performances. However, it is seldom that the material is the focus of the performance and even more so, that the material is equal to the dancer. This project aims to explore the intra-active relationship between knitted textiles and human, by designing flexible three-dimensional textiles with high kinetic and visual agency. A perspective that enables the designer to create new performative expressions together with the dancer. This exploration is conducted through technical and material explorations where the kinetic and visual potential of different knitted structures are developed. The intra-active potential is evaluated and developed through collaboration with a dancer. The three knitted structures with high kinetic and visual potential, are intra-acted with by a dancer in a filmed performance. This synergy of human and material is valuable as it is the result of a collaborative design process, where the material is the directing force both in the textile process as well as the dancer’s process. A result of a more homogeneous design process where human and material listens to each other, but also where different disciplines exchanges knowledge and perspectives in an intra-active relationship.