My new concertina cards are double sided and printed on 300gsm Callisto Soft White paper. They come in six different designs, A Husk of Hares, A Parliament of Owls, A Circus of Puffins, Rockpool, A Charm of Foxes and A Bevy of Deer. They measure 145 x 145mm when folded and there is a space on the back to write your message.