This Kaweco ink comes in a Midnight Blue colour that has been made with sustainability in mind being water-soluble, vegan and cruelty free. The ink comes in a 50ml glass bottle ready to be used when you need it. It is compatible with all types of fountain pens and with many other colours in the Kaweco range, you are sure to find some beautiful colours to write in. This ink is particularly suitable for Kaweco converters, which are a type of reusable cartridge making them sustainable and less wasteful. - Brand: Kaweco - Size: 50ml - Colour: Midnight Blue - Compatible with fountain pens - Water-soluble - Vegan and cruelty free