Montana acrylic marker 2mm set of 6 starter set comprising of shock red shock yellow shock blue light shock green light shock white pure shock blackthe beauty of using montana markers is that they provide a continuous flow of opaque acrylic paint which makes them ideal for overlaying solid layers of colour they can also be watered down when applied to a surface producing a similar consistency and effect to watercolour these watery hues can then be worked into using a variety of pen