Material: These sticky notes are made of premium PET material with a special adhesive, waterproof and translucent, non-toxic and odorless. Sturdy and durable, they resist fading. Size: You will receive 300 page flags in 5 colors, including 3 sets with 100 pieces each. Each index tab measures approximately 1.7 x 0.5 inches / 4.4 x 1.2 cm, suitable for daily study and work needs. Feature: Features a convenient pull-out design with a portable plastic storage box for easy access. The translucent tabs allow visibility of underlying text without covering it. Recommended for use with a ballpoint pen or pencil. Function: Helps plan, organize, prioritize, and personalize tasks to improve efficiency, ideal for studying, reading, document filling, and scheduling. Wide use: These transparent colored sticky note flags are suitable for marking books, documents, magazines, folders, and papers. Widely used in schools and offices.