Next time you hit the post office for stamps, check out these beauties with a message about sustainability.

Issued Aug. 3, these stamps are dubbed the Protect Pollinators Forever series, the stamps depict monarch butterflies and the western honeybee hard at work pollinating a variety of plants native to North America, including goldenrod, the coneflower and a New England aster.

“Bees, butterflies and other pollinators sustain our ecosystem and are a vital natural resource,” said U.S. Postal Service Judicial Officer Gary Shapiro. “They are being threatened, and we must protect them.” We’d happily wait in line for these stamps.