Diamine 50ml Inkvent Standard Fountain Pen Ink - Ho Ho Ho

Diamine Inkvent Standard Fountain Pen Ink 50ml sized glass bottle in Ho Ho Ho.

Full sized 50ml bottles of writing ink from the 2019 Diamine Inkvent Calendar, the Blue Edition.

Water-based, non-toxic, acid-free and vegan-friendly. The only go-to for any brand of fountain pens, especially vintage models.