The A6 Flat Card (4 5/8″ x 6 1/4″) is perfect for personal stationery and business correspondence, invitation suite inserts, casual correspondence, including letter-writing and photo-sharing and much more, these attractive flat cards are the perfect year-round card for everyday communication and much more. These notecards fit perfectly into A6 Envelopes (4 3/4″ x 6 1/2″) and Lee Bar envelopes.