High Quality: The elastic pen holder is made of high quality PU leather, which does not lose color, is odorless and looks elegant. Easy to Fit: This pen case PU leather case measures approximately 165 x 35mm and fits most regular pens, pencils, ballpoint pens, etc. The nylon elastic strap on the back of the pen case is extremely flexible and can be easily adjusted for quick access and removal. Unique Design: The unique elastic design allows the pouch notebook pen holder easily attaches to the hard cover of your notebook or diary so you can easily and quickly find what you want when traveling or need writing tools. > How To Use: Place the retractable rubber band on the back of the pen holder on the desired laptop or ipad, the rubber band is removable and the rubber band can be attached and removed from the pen holder with Velcro fasteners, suitable for most hardcover notebooks, it will serve you well for your daily writing tools. Widely Used: This elastic pen case can be placed not only on your laptop , but also on your ipad to store your ipad pencil. This new adjustable elastic pen holder is an ideal gift for travelers, teachers, students, friends and family.