uni-ball one P 0.5mm - Banana

Add a cheerful, energetic glow to your everyday carry with the uni-ball one P 0.5mm - Banana (Product Code: UMNSP05.28). A proud winner of the prestigious Japanese Stationery Store Award, this special "P" model (short for Pocket) completely redefines the geometry of a daily writing pen. Instead of a traditionally long, slender frame, it features a short, beautifully chunky, and "sweet" body shape meant to provide visual relaxation and a cozy, natural fit in your hand.

Dressed in a soothing pastel yellow Banana barrel, this 0.5mm edition is paired with a sleek, high-shine silver metal wire clip and an internal metal stabilizer tip. It is the ultimate piece of pocket-friendly perfection designed to accompany your planners, text annotations, and memos on the go.

Key Features

• Delightful "Chubby Pocket" Silhouette: Measuring a compact 4.6 inches (116.8 mm) long, its short and broader layout fits flawlessly into small pockets or bag loops, offering a "fine feel that fits in your hands."
• Advanced Low Center of Gravity: Inherits an internal brass stabilizer mechanism tucked behind the tip. This heavy nose piece secures the refill to eliminate micro-wiggles and shifts the pen's weight forward for stable, entirely effortless writing.
• Guinness Record-Breaking BEADS-PACK Ink: Pre-filled with an intensely rich black gel ink. The unique pigment particles are engineered to lock cleanly on top of the paper fibers rather than sinking in, making your handwriting stand out in a beautifully crisp, vivid way.
• 0.5mm Smooth Conical Tip: The medium-fine 0.5mm configuration provides a buttery-smooth ink flow that keeps lines sharp, punchy, and highly legible across any paper quality.
• Rapid-Drying & Bleed-Resistant: Features an optimized solid-to-liquid ratio that allows the liquid carrier to absorb instantly while the black pigment binds to the surface, delivering flawless, smudge-free performance.
• Wide-Opening Stainless Steel Clip: Features uni-ball's signature spring-loaded wire pocket clip, built wide and tactile like a heavy-duty clamp to latch securely onto thick journal covers, clipboards, or clothing pockets.

Specifications at a Glance

• Barrel Color: Banana (Soft Pastel Yellow)
• Hardware Finish: Polished Silver (Stainless Steel Clip)
• Ink Color: Intensely Vivid Carbon Black
• Tip Size: 0.5 mm (Medium-Fine Smooth Precision)
• Model Code: UMNSP05.28
• Dimensions: 13.9 mm (Diameter) × 19.2 mm (Max Width) × 116.8 mm (Length)
• Weight: 13.7 g (Perfectly balanced forward weight)
• Refill Type: Fully interchangeable; takes any standard UMR-38S (0.38mm) or UMR-05S (0.5mm) gel cartridges.