CAPACITY: The transparent file folder is A4 size; the envelops can be expandable for larger capacity. Approximately 800 sheets of paper can be stored. UNIQUE DESIGN: Snap button closure to keep documents secure; ID window is wide enough to insert a standard sized business card; the translucent surface of A4 plastic wallet keep contents visible. MULTIPLE USAGE: Perfect for daily use, such as school subjects, office files, traveling A4 files, business card and cosmetic storage, simple and fashion. Colour:black+transparent Material:plastic Size:about 33 x 25 x 8cm Package Contents: 6 x A4 Plastic Wallets 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.