Swift-Slide Dual-Color Gel Pen

Eye-catching submarine design to increase shelf attention • Dual-color writing (red & black) in one pen • Twin-ball tip structure for smoother writing • Silent sliding mechanism for classroom and exam use • Quick-dry ink to prevent smudging • High-frequency student usage with strong repeat demand This item combines novelty appearance + real writing function, making it a high-rotation BTS SKU rather than a simple promotional pen.