Protect and organize your index cards with our PEN+GEAR Teen|Adult 3in. x 5in. Plastic Storage Card Box Clear . Designed to hold a stack of standard-size 3 inch by 5 inch index cards our index card storage box is just the thing you need for keeping your notes to your finals in. Each box features a transparent clear color that makes it easy to identify contents at a glance and has a stackable build that s great for saving space. The storage boxes are versatile for use which means they are also a great way to store art/craft supplies or office/school supplies. With handles that lock the top in place for a secure hold you can feel confident that your important notes and information will be safely kept. Keep a variety of information organized and neatly stored with our PEN+GEAR Teen|Adult 3in. x 5in. Plastic Storage Card Box Clear .