A. Professional quality: It is made of 80-gram thick paper, which is durable and cost-effective, and can be used to store CDs. It can protect CDs from scratches, dust, or mold. B. High visibility: The transparent window facilitates easy viewing, enabling you to identify the CD contents without opening the envelope. This is suitable for clinics, baby imaging centers, laboratories, archives offices, churches, and other places. C. Cost-saving: The envelopes can be reused, which is an economical way to save money and protect CDs. D. Space-saving: Compared with CD cases, its design saves more space and can protect CDs from scratches and dust. E. Easy to store: The unique folding design can securely hold the CDs, preventing them from falling or sliding. F. Size: 12 cm G. Material: Paper H. Color: White I. Package contents: 100 CD envelopes J. The package only includes the above contents, and other items are not included. K. Notes: Light and different monitors may cause slight differences between the color of the item in the picture and the actual item. The allowable error in size is plus or minus 1 - 3 cm.