Add a touch of whimsy to your envelopes with these 35 Happy Mail stickers. Measuring 1.5 inches round, these stickers feature a playful flamingo design and can be used as envelope seals or labels. Perfect for small businesses or personal use, these multi-color stickers are sure to bring a smile to anyone's face. The theme of these stickers is labels, making them an ideal addition to any scrapbooking or paper crafts project.