1. UNIQUE DESIGN: Unique and sturdy elastic band design makes it easy for you to attach the pencil case to the hard cover of a notebook or planner, so you can easily and quickly find what you want when traveling or needing writing tools. 2. SPACIOUS SPACE: The pencil case has a zippered compartment that can hold 3-4 pens depending on thickness. It can well meet your needs for daily writing tools. 3. STORE EVERYTHING IN ONE PLACE: The pencil case can be used not only to store pens, but also to store some small items, such as headphones, data cables, SIM cards, USB sticks, etc. It is easy to access and no more clutter. 4. PREMIUM QUALITY: Made of PU leather and elastic band, very light and stays sturdy and durable for a long time. Suitable for office workers, security personnel, teachers, students, factory workers, employees, etc. 5. NOTE: It is only suitable for hard covers of a notebook or planner with a length of more than 21 cm and writing tools that are less than 16 cm. It is not limited to vertical placement, horizontal placement is also acceptable!