card cat with party hat Happy birthday to you! Printed on 270 gram Environment Birch paper: off-white paper with a small fiber in it. Environment Birch is FSC certified and is produced without the use of optical brighteners such as chlorine and consists of at least 30% post-consumer recycled fibers. With subtly rounded edges. Size of the card is A6 (105x148mm) As always, the back features some details from the illustration plus the logo of The Lemonbird, otherwise the back is blank.