LUX studies the combination of electronics and knitted textiles from a textile design perspective. The thought of experiencing textiles without touching them sparked the idea of designing textiles where touch is essential for the visual appearance. The aim is to design knitted textiles that light up when touched, in order to create an interactive experience for the viewer. Optical fibres were chosen because of their ability to transmit light and copper yarn works as an electrical conductor that triggers the reaction of light. The shapes of the knitted textiles have been created by utilising the characteristics of the optical fibre. LUX introduces a working method in which the optical fibre is given an important role not only as a light source but also as a tool for shaping the textiles. The result of the work is three textiles that display how electronics, consisting of sensors and light, can be merged with textiles and contribute to interactive behaviour.