If you know someone who can tell their cask from their keg, this is the card for them! Make sure you deliver this card with a case of beer for the ultimate birthday gift. Details: Designed by: The Hobbyist. 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.