The Winsor and Newton Designers Promarker in Midnight Blue is a professional-grade marker that is perfect for any artist or designer. This marker features a twin-tip design, with a fine tip for detailed work and a broad tip for larger areas. The alcohol-based ink is highly pigmented and lightfast, ensuring that your artwork will remain vibrant and true to color for years to come. The ink is also non-toxic and odorless, making it safe to use in any environment. The marker is also refillable, so you can keep using it for years to come.The Designers Promarker is ideal for a variety of applications, including illustration, graphic design, and calligraphy. It is also great for coloring in adult coloring books, sketching, and more. The marker is easy to use and requires no special skills or techniques. Simply draw or color in your desired area and let the ink do the rest. The marker is also great for blending and layering colors, allowing you to create unique and vibrant artwork.The Winsor and Newton Designers Promarker in Midnight Blue is a must-have for any artist or designer. With its high-quality ink, twin-tip design, and refillable design, this marker is sure to become a staple in your art supplies.