The card measures 105 x 150 mm and is sold with a coloured envelope. Blank inside for your own message. Printed onto 300 gsm FSC-approved board in the UK. This funny Colin the Caterpillar cake birthday card is perfect for sending to a friend on their birthday. Featuring the iconic chocolate M&S bug, it is guaranteed to send a smile and evoke feelings of nostalgia from kids' parties past and present.