Pen caps can be threaded onto a cap ring - so its almost impossible to lose them and the pen does not dry out^Unusual tube shape - so the pen doesn't roll away and can be easily picked up^Ergonomic grip zone ideally designed for children's hands^Can be left uncapped for up to 24 hours without drying out^Easily washable ink
- ergonomic grip zone- can be left uncapped for 24 hours without drying out
- Line width approx 1mm
- easily washable ink
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