Our flat card in cover weight fits in a 4 Bar envelope, the perfect response or guest card 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, acid-free, and prints great in laser and ink-jet printers. Flat size - 3 1/2" x 4 7/8" Sold in packs of 25