Inspired by the colours of the seasons, the Herbin Autumn set features 5 bottles of watercolour fountain pen inks. It is a smooth flowing, water-based ink made using natural dyes in France, resulting in a neutral pH level and making it suitable for both modern and vintage fountain pens. The winter set features blue and grey colours – Vert de Gris, Eclat de Saphir, Perle Noire, Poussiere de Lune and Gris Nuage. Each bottle contains 10ml of ink so it is the perfect sample pack.