Boxy 100 Ballpoint Pen

A compact, retro-inspired ballpoint pen with functional flair.

The Uni Boxy 100 features a distinctive rectangular barrel that resists rolling, while a dual-action click—top button for writing, an orange side button to retract adds a tactile edge.

Released in 1979, it remains a Japanese classic with a light, ergonomic grip and reliable 0.7 mm oil-based cartridge.

• Measures approximately 129 × 12.8 × 9.4 mm
• Weighs ~7 g
• Durable plastic body with flat sides and ribbed grips
• 0.7 mm oil-based black ink, quick-drying and mildly water-resistant
• Unique two-stage retract mechanism for smooth use and fidget-friendly feedback
  
• Made in Japan

Part of Uni’s everyday “Boxy” range, this pen balances simple utility and nostalgic design—small, tactile, and timeless.