COLOR CODED. 100 sheets per pack with 5 different colors- blue, green, yellow, orange, and red. Size: 3"x5"inch- 7.6cm x 12.7cm STAY ORGANIZED. Index cards are great at helping you stay organized whether it's at home, school or the office! They will always be convenient to have on hand. QUALITY. Made out of 160 GSM Paper. Index cards are a great tool for studying and enhancing memorization! They're easy to write on using pens, markers, pencils. DESIGN. The precision-cut edges help ensure the cards are the exact same size. These color-coded index cards are ruled on the front and blank on the back, making it simple to divide subjects or topics by color. WIDE APPLICATION. Perfect for home, school, and office use. Ideal for creating to-do lists, studying cards, presentation cards, quick reminders, and much more!