Yes, your eyes are working, enamel pins… on greeting cards! The pin is incorporated into the design of the card and can be relocated to a bag or jacket when gifted! AMAZING. These pins are also available without the card, so keep an eye out for those beauties.Details: 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 sources and/or recycled materials Blank inside for your own message. 100% recycled brown kraft envelope supplied. Made in the UK.