7 DIFFERENT COLORS: white, pink, green, blue, purple, orange, and yellow. You can create special markings according to different colors, making it easy to sort notes by subject or category. Material: The notebook is made of high-quality eco-friendly and recyclable materials. Packaging List: The box is shipped in cardboard form, including a notebook with 7 pieces of cardstock. 50 sheets per piece, 9 x 5.5 cm Usage: Perfect for study and work notes, can also be used on DIY greeting cards and as a bookmark. With a Ring: Easy to assemble and keep together, allowing cards to be added, removed, or reorganized. There are 7 colors you can use to differentiate note types. These cards are very practical for taking notes, learning, and commenting. They can be used at home, in the office, on the train, in school, and anywhere else. Specifications: Quantity: 7 pieces, 50 sheets per piece Color: white, pink, green, blue, purple, orange, and yellow Material: Cardstock Package Includes: 7 x DIY Paper Flash Cards Note: 1. Allow 1-2 cm tolerance due to manual measurement. 2. Colors displayed on photos may appear slightly different on your computer screen as monitors are not calibrated the same.