(Main Requests) Desired size: 18cm x 10cm, with a 11mm ring diameter. (Price) We will provide a revised estimate once the specifications are finalized. (Reference Product Information) This is a narrow-size system notebook. It features a pocket that is easy to insert items into. It has a simple yet clean design, making it a visually appealing notebook. The sample leather uses Margot Navy for the exterior and Raspberry for the interior, resulting in a sharp impression. You can choose from various colors for the front and back leather. ♪ Main Standard Specifications The ring is screw-type and detachable. The screw heads are visible from the spine. It comes with a ring guard and large pockets on both the left and right sides. * The ring hardware (estimated at 1000) is subject to change based on procurement costs, and the actual cost (including fees) at the time will be added. The following are options (additional fees): The costs are estimates. They may vary depending on the content. ・Left and right mini pockets: 1000 ・Refillable divider: 1000 ・Refillable pen holder: 1500 ・Protective sheet: 2200 This is an extended version of the ring guard. By inserting it into the left and right pockets, the screw heads of the ring hardware are no longer visible from the spine. It is removable and can also be used as a notebook cover. Please note that the ring guard will not be included when this option is selected. ・Size change: 1000 The overall size is designed with a 20mm ring diameter as standard, but it can also be changed to 15mm or 30mm as an option. ♪ You can choose from various Italian leathers. Please refer to the following for examples. https://jp.mercari.com/item/m60534177198?afid=0769274469&source_location=share&utm_medium=share&utm_source=ios * Please comment before ordering, as the leather may not be in stock.