These Japanese ballpoint pens are a dream to write with. With their hexagonal wooden body and ultra fine nib with black solvent ink, they are perfect for drawing, sketching and calligraphy. 

And as an added bonus it has some suggestions of something to do every day of the week, in French - educational too! These have been our go-to ballpoint pens for years. The line is 0.5mm.  Refillable.