The Winsor & Newton Designers Promarker Marine is a professional-grade marker that is perfect for creating vibrant and dynamic artwork. This marker features a dual-ended design, with a fine tip on one end and a broad chisel tip on the other, allowing for a wide range of line widths and styles. The alcohol-based ink is highly pigmented and lightfast, ensuring that your artwork will remain vibrant and fade-resistant for years to come. The ink is also non-toxic and acid-free, making it safe for use by artists of all ages. The marker is also refillable, allowing you to replace the ink when it runs out. With its versatile design and vibrant colors, the Winsor & Newton Designers Promarker Marine is the perfect tool for creating beautiful artwork.