Add the Filofax Architex Concrete A5 Notebook to your stationery list. This elegantly designed notebook features pages that can be refilled and repositioned according to your needs to create something that works for you. Designed with a twin wire spine, it can fold back on itself and lies perfectly flat when opened. It comes with a moveable index with pocket and moveable page marker or ruler. The pages of this notebook are also compatible with all A5 and A4 Filofax Notebooks.