Celebrate your special day with a touch of Sheldon Cooper's quirky charm! Features Sheldon in his iconic striped shirt, paired with his hilariously deadpan message: "Social convention dictates that I wish you a happy birthday." Perfect for fans of the show or anyone who appreciates a humorous twist on a classic greeting! Blank inside for your own personal message. Printed in the U.S.A. 14pt uncoated cardstock. Size: A2, 4.25 X 5.5 Inches folded card. Packaging comes in a clear cellophane sleeve with matching kraft envelope.