The STABILO viltstift Trio A-Z classpack contains 144 triangular grip fiber-tip pens designed for educational and office environments. These water-based markers feature an ergonomic triangular grip zone that provides comfortable handling and promotes proper writing posture. The pens are easily washable from skin and most fabrics, making them suitable for classroom use and creative applications. Each marker delivers consistent, vibrant color application on paper surfaces. The complete set comes packaged in a practical cardboard hanging case for convenient storage and organization. With the A-Z designation, this comprehensive collection offers a complete range of colors for various writing, drawing, and educational purposes. The triangular barrel design ensures secure grip control for users of different ages and skill levels. These fiber-tip pens are formulated with water-based ink that provides smooth application without bleeding through standard paper. The washable nature allows for easy cleanup from surfaces and skin, reducing maintenance concerns in busy environments. The classpack configuration makes this set ideal for schools, offices, and group activities where multiple users require access to a complete color selection. The hanging storage case facilitates space-efficient organization and quick identification of available colors. Each pen measures approximately 14 cm in length with a triangular cross-section of about 1.2 cm per side, providing comfortable handling characteristics. The water-based ink formulation ensures minimal odor and reduced staining compared to permanent markers. This product represents a practical solution for educational institutions, art classes, and office settings requiring reliable writing instruments in multiple colors.