Happy Birthday to My Soy-Mate - Birthday Card The perfect birthday card to your #1. All greeting cards are printed on 325 gsm card stock. Images are adjusted so colors may vary. All cutting, scoring, and folding is done by hand, therefore, there may be slight variances with the product image. Each greeting card has the Milky & Co. Studios logo, handle + artist initials on the back of the card. The inside of the card is blank.  All cards come with a A2 kraft envelope and packaged in recyclable cellophane packaging bags.