Heavyweight, 65 lb. cardstock is perfect for greeting cards, postcards, report covers, rubber stamping, memory books, flyers and announcements. Cardstock works well in laser and inkjet printers. Paper is acid-free, lignin-free and buffered. 10 assorted colors include Violet, Hyper Pink, Pumpkin Orange, Cobalt Blue, Hyper Yellow, Marine Blue, Rojo Red, Emerald Green, Hyper Lime and Gold.