'Be your own kind of beautiful' card for beetles 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 rounded edges. Size of the card is A6 (105x148mm) Nice detail: on the back of the card, there are some small details from the front illustration.