Because NO ONE Likes Boring Mail!! Why not add this cuteness to every package?! 25 stickers per pack! Perfect Touch for Thank You Notes, Packaging, Envelopes, Poly Mailers, Boxes! Will not Smear when they get wet! Dimensions: 1.1" X 3.5" Rounded Corner Rectangle Stickers Black & White Warning Opening This Package Will Cause Extreme Happiness Thank You Stickers, 25 Stickers Per Pack