Ystudio Revolve Fountain Pen - BlueAs a representative work of the brand's 10 year milestone, "Classic Fountain Pen" represents the 10 years of experience of YSTUDIO. After designing a variety of unique writing instruments, YSTUDIO has returned to the essence of design to create a truly "pure" fine fountain pen. The "Classic Fountain Pen" is the first fountain pen with YSTUDIO's own nib. The nib of the whole series is embossed with the first logo of the brand in the early days of its