The triangular panels are made of a PTFE-coated glass fibre mesh, which is a material capable of withstanding high temperatures and it is a “self-cleaning” fabric. The final fabric presents an open area of 15% and a light transmission of 25%. The panels are very lightweight (due to the PTFE membrane structure) and therefor not much power is needed to change their geometry. The panels are constructed in a way that one can easily be replaced when damaged, so recycling the façade will be reasonably easy.