All you siblings out there, I’m sure you can sympathise… from either perspective! The perfect greeting card for that annoying brother.Details: Designed by Safely Endangered. 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 forests and/or recycled materials. Blank inside for your own message. 100% recycled red & white envelope supplied. Made in the UK.