Our flat card in cover weight fits in an A2 envelope, the perfect thank you or birth announcement size. Environmentally friendly, eco-white has a beautiful bright eggshell finish. Made just for us, this 100% recycled with an impressive 30% post-consumer waste paper is archival and acid-free and prints great in laser and ink-jet printers. Flat size - 4 1/4" x 5 1/2" Sold in packs of 25