Frixion Rollerball Pen
- New thermo sensitive gel ink that disappears with friction using the rubber tail tip on the pen with no residue and no tearing of paper
- Smooth writing gel ink
- Refillable
- If pen is exposed to extreme heat (>= 60°C), the ink will disappear
- To restore colour, cool to at least <-10C in freezer and ink will reappear
