Package Contents: The plastic adhesive label holders are perfectly sized at 3.5 x 3.5 inches to accommodate 3 inch index cards. Quality Materials: Our index card pockets are made of high-quality, sturdy material that 't easily deform or break. The adhesive pockets have high transparency and 't turn yellow even with long-term use. Easy to Use: The library card pockets are designed to be easy to use, with a sticky backing that enables you to affix them to any for quick and convenient tagging or marking. Simply insert your index cards, business cards, note cards, postcards, labels, or photos into the self-adhesive pockets for effortless sorting and organization. Wide Applications: These versatile storage labels can be used in a variety of settings, including , in the office, at the library, in department stores, and more. They're perfect for sorting and organizing file cabinets, toy boxes, storage bins, office supplies, and food containers. After-Sale Service:If you have any dissatisfaction with our adhesive label pockets, please do not hesitate to contact us Color: Transparent Material: plastic Package Contents: 60Pcs * Self Adhesive Label Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.