Each pack contains 100 white cardboard sheets, measuring 8.5 * 11 inches and weighing 80 pounds/230 grams.White cardboard is compatible with most inkjet printers, laser printers, and copiers; Please verify the maximum thickness specification of the printer before printing. High quality cardboard: Our cardboard surface is not easily permeable, making it very suitable for watercolor painting, templates, and ink blending. Cardboard can evenly absorb ink, with smooth strokes, suitable for various pens. This thick paper has good folding properties and clean edges. Cutting, folding, and painting can perfectly unleash your creativity.It is very suitable for making greeting cards, invitations, brochures, announcements, postcards, index cards, photos, flashcards, restaurant menus, and stationery.