"Cocoiro Letter Pens" have a flexible tip unlike ordinary felt-tip pens and ballpoint pens, . You can write beautiful characters according to your writing pressure and writing speed. This product is a pen body only. The pen tip and ink are not included. Set and use a special refill sold separately. The ultra-fine refills are available in a total of 12 colors, including dark colors suitable for writing and POP colors that are exciting. We also offer ball types and full-scale brush types that can be used in a wide range of situations. (Both are black only) The body has a smooth streamlined shape and a soft surface, which makes the mind feel relieved and gentle to the touch. This stylish pen is perfect for those who value handwriting and writers who want to use their favorite pen for a long time.