【This item is made to order】 This is a simple system notebook that allows you to feel the solid texture of thick leather. Made with thick vegetable-tanned leather, you can enjoy the aging process as it develops a deep color and luster the more you use it. As pre-use maintenance, it has been cared for with leather cream, so you can use it right away. ■Sizes Ring diameter 15mm Ring diameter 19mm Ring diameter 25mm (Large capacity! Holds about 200 refills) Feel free to order. ■Paid Options Ring holder (1000 yen) Body pen holder (500 yen) Lifter (2000 yen) Pen holder refill (2500 yen) Please order from the comments. ■Leather Colors Extra-thick vegetable-tanned leather - Natural Extra-thick vegetable-tanned leather - Black Extra-thick vegetable-tanned leather - Dusty Blue ■Name engraving (Paid option) Your name, motto, etc., the usage is up to you! Alphabets, hiragana, katakana, and numbers can be used. ■About the Material We use leather that has been tanned with tannins over a long period of time and with great care. With long use, it will become supple, soft, and glossy due to aging. ★Please contact us with the following items after purchase.★ Body color Desired ring diameter Color of ring holder and pen holder 【Notes before ordering】 ● Leather is a material made from living cows. There may be warts and scars from before the cow's life, and it is difficult to cut out a part without any scratches or lumps. We use the cleanest parts as much as possible, but please understand that there may be some individual characteristics. (Especially on the back, blood lines (traces of blood vessels) are easily visible) ● Because cream is applied during production, you won't need leather cream for a while, and it's okay to just remove dirt with a cloth or brushing. If you wish to take care of it yourself, please let us know. We will provide you with the untreated vegetable-tanned leather.