Sennelier Ink Brush Pens is to are equipped with a real brush tip made of real fibers unlike the many felt-tips on the market whose tip is a brush-shaped foam. Thanks to these real fibres, the application of the colour is more fluid, constant and linear, taking advantage of the internal capillarity of the brush to facilitate the dispersion of the colour. In the same gesture, the artist can create extremely fine and very wide lines (up to 10mm) with a continuous flow of ink, by simply varying the pressure of the tip on the paper. Pigment based and exclusive to Sennelier, it is environmentally friendly, which explains why there is no safety marking on the label. 24 of the 36 colours are from Sennelier's "La Petite Aquarelle" range. This correspondence allows watercolourists and illustrators to harmoniously complete the details and highlights of their works in watercolour. Suitable for lettering enthusiasts, bullet journal fans, professional and hobbyist watercolorists.