Premium-quality envelope seals stickers are made of aluminum foil paper. Thick enough, you don't have to worry about the heart envelope stickers seals breaking easily. Silver foil embossed design make silver foil embossed wax seal looking more unique, no matter where you stick silver metallic foil stamps stickers, they looks high-end and sophisticated. Especially suitable as wedding stickers, such as wedding envelope stickers or wedding invitation stickers. You also can use wax-look seals stickers to decorate wedding seating chart board, 'save the date' envelope, 'thank you' card, gift box, gift bag, etc. Good gift stickers.