Happy Flippin' Birthday Blank Inside A2 - 4.25" x 5.5" Printed in New York City Each Design is Hand Illustrated Printed on High Quality Recycled 30% Post-Consumer Felt Paper using wind power process, FSC Certified and Acid Free 100% Recycled Post-Consumer and FSC Certified Kraft Envelope Premium Eco Protective Cellophane Sleeve derived from plant-based PLA and certified compostable