Fibrepens create a 0.5 mm to 4 mm paintbrush stroke. Ideal for calligraphy and writing with different strokes and mixing colours. 10 colours: yellow, navy blue, blue, purple, brown, orange, black, red, pink, green. Water-based paint creates bright, easily-applied colours that can be mixed together. It can be easily washed out of most fabrics (soak the item in cold water for an hour and then machine-wash on a cold setting). With a perforated safety cap.