Gel Ink Pen, 0.5mm Tip — uni One P

A compact, everyday-ready gel pen from uni Mitsubishi Pencil, built to slip effortlessly into your routine. The "P" stands for "Pocket" — a nod to its small, easy-to-carry size.

Powered by uni-ball One ink technology, this pigment-based gel ink lays down bold, saturated color that sits cleanly on the page, dries fast, resists smudging, and minimizes bleed-through. The ink holds a world record for being among the darkest gel inks available, and the pen's design won a 2024 Japan Stationery Award.

Its short, rounded barrel sits comfortably in hand, paired with a wide, easy-press knock and a short, sturdy clip that keeps the compact silhouette intact. The candy-inspired body colors bring a playful touch to an everyday tool.

Refillable with UMR-38S / UMR-05S cartridges, so the same pen keeps working long-term.