15 th Birthday Card  This wonderful greeting card is very simple yet effective, because of the colours and style, it features a glossy and sparkly font with a gradient of different colours, and the words read: ‘ 15’ The card measures 16cm x 13.5cm and opening the card you find it has the words ‘Happy Birthday! ’ and it also comes with beautiful brown envelope. Paperlink Paperlink is one of the greeting cards industries market leaders of contemporary and humorous cards. Founded in 1985 the Paperlink collection has grown for all occasions, with beautiful imagery or funny cartoons there is a card for everyone!