Well this isn’t a birthday card you will forget in a hurry. Quick give them the birthday card, celebrate another year, wish them a happy birthday, grab your slice of cake and get out of there! Details: Designed by: Steven Rhodes Size: Square (148 x 148mm / 5.8 x 5.8 inches). - that fits as a standard sized letter in the UK mail. Produced from sustainable sources and/or recycled materials Blank inside for your own message. 100% recycled brown kraft envelope supplied. Made in the UK.