This postcard packaging box is made of paper. It has a simple appearance design and practical functions. It is made with excellent craftsmanship and has a comfortable and gentle touch. You can rest assured to use it for packaging and decoration. This is that will serve you well. Features -Color:Black -Material:Paper -Size:23.00X12.00X0.10cm/9.04X4.72X0.04in -This is a very beautiful and practical storage box, which can store your postcard well. -Simple appearance design, elegant, chic and practical, can match the postcard well. -The box is easy to use, convenient to store, light and practical, with good texture. -Also perfect for envelope, invoices, cash, photo, pictures, card and more. -Made of premium paper materials, smooth and comfortable, you can use it with confidence. Package list: 60 x postcard boxes