Say happy birthday with this fun print! This is a flat greeting card. Hand-lettered “Happy Birthday” text on the front with illustrated balloons. Back of the card is all blank white with an easy-to-write-on surface. 5.82” x 4.13” FLAT CARD. Printed on high-quality 16pt premium cardstock (sustainable source, ECF). What's included: - ONE Happy Birthday Flat Greeting Card - ONE Kraft Envelope Shipped in a plastic sleeve within a stay-flat sturdy mailer.