The Winsor & Newton Designers Promarker is a professional-grade marker that is perfect for any artist or designer. This marker features a unique, pebble blue color that is sure to make your artwork stand out. The marker is made with a high-quality, alcohol-based ink that is both fade-resistant and waterproof. The nib is designed to be flexible and durable, allowing you to create a variety of line widths and effects. The marker is also double-ended, with a broad chisel nib on one end and a fine bullet nib on the other. This makes it easy to switch between thin and thick lines quickly and easily. The marker is also non-toxic and acid-free, making it safe for use by both adults and children. With the Winsor & Newton Designers Promarker, you can create beautiful artwork with ease.