The cover, made of board paper core material with an olefin film adhered to it, is rigid, durable, and the surface is made of a material that is resistant to wrinkles and scratches. It uses a unique metal clip that can be operated with one touch and securely holds documents. It also comes with a pen holder that can accommodate thick-barreled pens (up to 11mm in diameter). In addition, there is a transparent pocket on the inside of the cover, convenient for storing memos, etc. The pocket has slits for storing business cards. Product Specifications: Size: A4 External Dimensions (Height, Width, Thickness): 335 x 237 x 10 (17 at the clip) Material: Olefin film lamination (core material: recycled paper pulp blend) Product Color: Black ● Material: Olefin film lamination (core material: recycled paper pulp blend) ● Recycled Material Ratio: Core material: 100% recycled paper pulp blend