Frozen Treats Forever First Class Postage Stamps

Ice pops on sticks, in a range of shapes and colors, rendered flat and bright. It is a summer stamp in the most literal sense - there is no other reading of it - and the Postal Service leaned into that rather than dressing it up. Ice pops themselves are a genuinely democratic product: made by large manufacturers, by artisanal shops, and by anyone with a freezer and a mold.

It carries the mail that goes out between May and September. Summer party and barbecue invitations, camp letters, birthday cards for children born in the warm half of the year, thank-you notes after a visit. Ice cream businesses and seasonal shops use them on their own correspondence. Booklets of 20, self-adhesive. Forever value applies, so a book bought one summer works just as well the next - which is the reason to buy more than one.