Let your mum know you got this! Let mum sit back and enjoy this Mother’s day with a good cup of tea made by you! Details: Designed by Gemma Correll. 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.