This is a Micro 5 system planner made with Italian Alaska leather, vegetable-tanned wax leather, and a Krause binder. The binder has an inner diameter of 11mm and can hold approximately 70 sheets of standard refills. The outer leather is a vegetable-tanned wax leather similar to bridle leather, the inner leather is Italian Alaska leather, and the hardware uses Krause binder rings. Approximately 117mm (height) x 166mm (width) The inner diameter of the Krause binder rings is 11mm. Furthermore, a core material with moderate thickness and strong resistance to bending and pulling is used between the outer and inner leather to prevent the body from sagging. It is set up with reference to plotter's 2mm grid refill and Ashford's band lifter, etc. It is finished by hand-stitching, the edges are polished, and the edges are dyed in a color close to the leather color (onyx color). It is a Micro 5 size, and it is a perfect size that does not allow the refills to stick out when closed and has no bulkiness. Both the outer and inner leathers are easy to see the aging process and are comfortable to hold. How about using it for everyday memos or as a companion for work? *Please understand that minor scratches, scuffs, and wax unevenness are inherent characteristics of the leather.