Handmade M5 Size System Planner Simple Tochigi Leather Last one available This is a self-made M5 size binder (system planner). The size when open is approximately 132 x 170mm, and the hardware is 15mm, so you can hold plenty of paper. *The leather used is 2mm thick nubuck leather, precisely cut and lightly polished with mink oil and Tokonole. There are scratches and marks unique to leather; for those who can appreciate them as character. *A simple protective part made by cutting a clear file is attached to prevent ring marks on the binder. (Protective part is removable) *The binder hardware is screwed on, so it can be removed with a screwdriver. *Because it is thick leather, it may be stiff to open at first. Please try using a rubber band or other methods to help with this.