Bright, Blendable Colours in a Brush: Brush pens for lettering and colouring with no mess. Flexible Nib: Brush pen has a flexible tip will quickly spring back to its original shape. Non-Toxic: This brush set bears the trusted AP seal and meets ACMI non-toxicity standards. Blendable Colours: Water-based ink allows blending with the Koi colourless blender pen or with the a few drops of water with the Koi water brushes
