Kleid notebooks and diaries primarily use OK Foolscap paper, the only high-quality writing paper in Japan.

The paper's roots lie in 19th-century England, where it is named after foolscap, a paper that appears in the detective novels "Sherlock Holmes" by British author Arthur Conan Doyle.

"OK Fools Paper" has earned an extremely high reputation as a high-quality writing paper with a smooth writing feel and excellent ink absorption. It is also compatible with fountain pens, and the unique raid (grain) and watermark are proof of Kleid's commitment to providing a comfortable writing experience every time you write.

"Kleid" is a coined word based on the German word "kleid," which means "clothes" or "dress." This phrase, with its catchy sound and beautiful balance of characters, embodies the brand's philosophy of connecting fashion and stationery.