Mind Wave Jetstream 4&1 Ballpoint Pen – Piyoko Mame Edition

When dependable engineering meets unapologetic charm, one gets something rather delightful. The Mind Wave Jetstream 4&1 Ballpoint Pen pairs Mitsubishi’s famously smooth Jetstream performance with the irresistible character of Piyoko Mame.

This collaboration model features two sweetly expressive designs — Yofukashi and Oyasumi — bringing personality to a pen that is otherwise quite serious about its writing credentials. Beneath the playful exterior lies the highly practical Jetstream 4&1 multi-function mechanism.

With four ballpoint colours — black, red, blue, and green — plus a 0.5mm mechanical pencil, it offers five essential functions in one streamlined barrel. The low-viscosity Jetstream ink glides effortlessly, dries quickly, and produces crisp, dark lines that keep notes looking sharp and organised.

Ideal for colour-coded planners, lecture notes, or tidy office documents — all with a gentle hint of character peeking through.

Want the whole set? Find the matching Piyoko Mame Tabs here and the Piyoko Mame Washi Tape here.

Tools for Big Thinking