Remember your first picture book? Well you probably didn’t have this on the M page, because M is for muff diver! Check that one on urban dictionary if you’re not sure what it is!Online Exclusive - 3 for 2 on cards (mix and match).Details: Designed by Mark Callaby. Size: A6 (105 x 148mm / 4.1 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 brown kraft envelope supplied. Made in the UK.