Printed with antique ornaments and type in bright blue ink on white Rives BFK, a luscious 100% cotton paper. Blank inside. The paper welcomes all sorts of use, from basic pencils or ballpoint pens to fountain pens and watercolors, with no unsightly bleeding. Folded over, cards are 3 1/2" by 4 7/8", known as a 4BAR card, the minimum mailable size. Each card is matched with an equally indulgent Crane's Lettra 100% cotton envelope in a clear plastic sleeve.