Super large capacity and multi-functional storage: This pen case measures 125*215 millimeters and has ten compartments, which can easily hold a 20-centimeter ruler and at least 50 pens. It is very suitable for large-scale storage of stationery. It can also be used as a makeup bag or your first Ita bag, providing versatility for various needs Super large capacity and multi-functional storage: This pen case measures 125*215 millimeters and has ten compartments, which can easily hold a 20-centimeter ruler and at least 50 pens. It is very suitable for large-scale storage of stationery. It can also be used as a makeup bag or your first Ita bag, providing versatility for various needs Unique transparent layer design: The transparent front window includes a detachable double-sided layer. It is allowed to be brought into the examination room for personal use, and enamel pins, brooches, badges, buttons, stickers and other decorations can be customized. Show off your unique style and share layers with friends. Waterproof and highly practical: Equipped with snap fasteners and a transparent waterproof layer, it effectively protects your stationery and keeps the pen case clean and tidy. Your items will always remain in perfect condition Personalized customization: Easily create your own unique style by adding personalized decorations to the transparent areas. This Ita bag is a canvas for you to express your personality and creativity. It will make you the focus of attention in your work or social activities