This is a nylon cap made with the BOOK typeface designed by 정해지 (Jeong Haeji). It is crafted from lightweight material, making it easy to wear without any burden. The front features the embroidery of “BOOK,” while the back showcases the embroidery of “Everywhere is a BOOK.” Choosing between two different-colored styles also adds a playful touch, as if the eyes of BOOK are reading a book.