Imagination International Art Cases allow storage and transportation for all 358 Copic Sketch markers, with room to spare for accessories. Aluminum reinforced, textured plastic outside with rubberized foam interior lining inside. Any Copic hard plastic case fits inside easily, and is securely held wherever it is placed. Rubber feet on two sides protect the outer surface with silver hinges and handle to complete the briefcase look. Includes detachable shoulder strap. Royal Blue case- measures 7 x 18.5 x 14 inches.