usps the frozen treats postage stamps (book of 20) usps cool off with frozen treats a postal service stamp featuring frosty, colorful, icy pops on a stick. the tasty, sweet confections come in a variety of shapes and flavors. this booklet of 20 scratch-and-sniff stamps showcases margaret berg’s whimsical watercolor illustrations of ten different designs. the stamps are printed with a coating that evokes a sweet, summer scent. this listing is for a double-sided booklet of 20 forever stamps