Inside: And enjoy where the day takes you. Happy birthday! Celebrate the most important people in your life with the best-selling Positively Green line of cards, which feature beautiful illustrations, thoughtful quotations, and a helpful green tip. 5.38″ H x 4.5″ W Envelopes are plain white Printed with soy ink on Forest Stewardship Council® certified 100% recycled stock Each card features a different environmental tip on the back