Inkadinkado Cling Stamp, For The Envelope Self clinging and repositionable - can be used over and over again for versatile stamping Stamps cling securely to clear acrylic blocks(sold separately) Easy to use, easy to store, reusable and made to last Clean your stamps right after using them so that they will always be fresh for the next use 5-piece cling stamp set. Sheet size 2 inch by 6 inch