20 sheets of white cardstock papers per pack. Each white cardstock measures 210x297mm / 8.3x11.7inch (the standard size of A4 paper). Please check the size carefully before buying. These250gsm cardstock papers are thick, sturdy and durable, not easy to break, which are ideal for stationary and business printing. With smooth surface and low transmittance, you can use them to print clear, clean and bright texts and patterns with confidence. Our heavy duty cardstock papers can be widely applied for making postcards, posters, greeting cards, DIY menus, game cards, party invitations, scrapbooking, business cards, files, etc. These thick white craft papers can be widely used for home, office, school, classroom, art class, kids DIY painting, etc.