Our A4 binders are made of high-quality kraft paper, with 2mm thick cardboard, which has a good texture, flat and smooth cut . The binder has four metal rings to fill the inner pages, and the metal snap lock securely holds the paper and prevents it from falling out. It can be turned on by pressing the switch at both ends. You can then add or delete worksheets. Then close the ring again. Folder size is 313x235mm, can be used for diary, office, travel journal, poetry, sketching and painting, writing, work notes, study marks. Colour:Kraft paper color Material:Kraft paper + metal Package Contents: 2 x A4 Refillable Kraft Paper 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. Our A4 binders are made of high-quality kraft paper, with 2mm thick cardboard, which has a good texture, flat and smooth cut . Folder size is 313x235mm, can be used for diary, office, travel journal, poetry, sketching and painting, writing, work notes, study marks. The binder has four metal rings to fill the inner pages, and the metal snap lock securely holds the paper and prevents it from falling out. It can be turned on by pressing the switch at both ends. You can then add or delete worksheets. Then close the ring again.