The top quality felt-tip pens offer endless color options. With a 1 mm thick tip for strong lines and coloring areas. The robust tip ensures even ink release and can be left uncapped for 24 hours without drying out. The intense colors have good coverage and are water-based, odorless and mixable for beautiful watercolor effects. Use with thicker paper or cardboard for best results. Explore your creativity with these versatile felt-tip pens!