USPS First-Class Forever Stamps featuring the classic U.S. Flag design. This pack contains 5 booklets with 20 self-adhesive stamps each, totaling 100 stamps. Forever Stamps are always valid for mailing a one-ounce letter regardless of future price increases, making them a smart purchase for everyday correspondence. The pressure-sensitive adhesive backing makes them easy to peel and stick without moistening.

These stamps can be used for standard First-Class Mail letters weighing up to one ounce, and multiple stamps can be combined to cover additional postage for heavier mail or packages. Made in the USA by the United States Postal Service. Purchase limit of 10 packs per Costco membership.