The first scratch-and-sniff U.S. postage stamps will be released later this summer, according to a news release today from the U.S. Postal Service. 

The first-class forever stamps will add “the sweet scent of summer to letters of love, friendship, party invitations and other mailings” the USPS said in its release.

A first-day-of-issue dedication ceremony, free and open to the public, will take place on June 20 at 6 p.m. local time the Thinkery Children’s Museum in Austin, Texas.

The stamps feature illustrations of frosty, colorful, icy pops on a stick. Today, Americans love cool, refreshing ice pops on a hot summer day. The tasty, sweet confections come in a variety of shapes and flavors.

Ice pops are made by large manufacturers, home cooks and artisanal shops. In recent years, frozen treats containing fresh fruit such as kiwi, watermelon, blueberries, oranges and strawberries have become more common. In addition, flavors such as chocolate, root beer and cola are also popular. Some frozen treats even have two sticks, making them perfect for sharing.

There are 10 designs – each showing two different treats – that will be sold in booklets of 20. The artwork showcases is from Margaret Berg, of Santa Monica, California, who depicted the whimsical illustrations in watercolors. The words “Forever” and “USA” appear along the bottom of each stamp.

Art director Antonio Alcalá of Alexandria, Virginia, designed the stamps with Leslie Badani of Alexandria, Virginia.

A Postal Service spokesman declined to say if the 10 stamps would have the same or a variety of aromas, noting that information will be released when the stamps are issued. He also noted that the technology used for the stamps will also be explained at that time.

The Frozen Treats stamps represent the third time in a year that new U.S. stamps have featured innovative technology. One June 14, 2017, the USPS issued eight Have a Ball stamps. It was the first time the U.S. issued touch-and-feel stamps in which the stamps had the feel of the sports ball shown. Six days later, on June 20, the USPS issued the Solar Eclipse stamp in which an image of the Moon was hidden behind dark, thermochromic ink until it was warmed, such as by the heat of a thumb’s touch.

The U.S. is a bit behind the world in scratch-and-sniff technology on postage stamps. Bhutan issued the world’s first such stamps in 1973 with stamps that smell like roses, according to an article published May 1, 2015 in Linn’s Stamp News.

The American Topical Association lists 114 stamps on its check list of scented stamps. Roses remain a popular scent on the list along with such fragrances as chocolate, vanilla and coffee, according to the article in Linn’s. Other scents you can find on stamps include honey, cinnamon, pine, apple, lemon, sweet-and-sour pork and fire (burnt wood).