It's suitable for use with inkjet and laser printers so you can print off your own designs and creations. It's acid-free to be long lasting and is perfect for projects, invitations, letters and more. Features: The paper has a thickness of 125 gsm making it perfect for letters, cards, signage, invitations and more. Each sheet is A4 size, perfect for everyday use or you can cut it down to the size you need. There are 25 sheets of thick paper in this pack so you can stock up. The paper is acid-free so it won't react with your art supplies. It's suitable for use with photocopiers, inkjet and laser printers. The paper in this pack is black.