(25 pack) Pen+Gear Ruled Index Cards, 3" x 5", White, 100 Count

These index cards are perfectly suitable. They are a standard 3x5 size, and are ruled. The top line is pink while the rest are blue, which is pretty common. I did notice that the top line is spaced the same as the blue lines, which I like. Each pack comes with 100 index cards. They fit perfectly well in my recipe box, have a nice weight to them, and are easy to write on. The front is lined and the back is not.

My daughter uses these 3 inch by 5 inch index cards all the time. One side has ruled lines and the other side is blank. She uses them to write down key notes and highlights in her different classes in school. So when she wants to refresh her memory/brain or study something quickly before a quiz or a test she just has to look at her index cards! There are 10 lines on each card for writing as well as a header line underscored with red. They fit into all of her binders and folders quite easily. She also sorts them in an index box by chapters and can easily review them all before bigger tests or exams. I use them to organize boxes and/or containers. Since they are much thicker than regular sheets of paper and can stand up to a permanent marker being used on them. They're also handy just to keep on your desk if you need to write something down quickly or just make a shopping list. They can always come in useful!