The Flat Pack: Minimalism as Discipline The Miru 1day Flat Pack's packaging — just one millimetre thick, the slimmest in the world — sits flush in a jacket pocket, a breast pocket, a slim travel wallet. What strikes you first is how unremarkable the ritual becomes. You peel the foil, and the lens is already oriented correctly, outer surface up, ready. No squinting at a bowl of solution, no second-guessing inside-out. You are done in seconds, and your hands have barely touched the lens itself.