Correct-Grip Educational Fountain Pen

Comes with 4 ink cartridges inside the rocket chamber,Thoughtful design for an easy writing start,Smooth ink flow with uniform handwriting,Continuous writing without skipping,Three-point grip for correct writing posture,Ergonomic design for comfortable control,72-hour anti-leakage ink-locking structure,Opens when pressed, seals when not in use.Push-button nib extension with tip protection,Safe 10 mm nib exposure,Minimalist soft colors with premium packaging,Rocket-inspired design,This is not just a pen ,it’s a high-conversion BTS item with refill potential.