These aluminium foil balloons are large and in itself can create a nice Anniversary party decor. Its durable and does not burst like rubber balloons. It can be self inflated using a straw (included). Printed instruction to inflate is also included with the package. Very Nice product for party decor. Key Feature:- - They are perfect decorations for birthday party supplies. - When the party is over, it can be used as a toy for children.And you can reuse it, you can inflate it over and over again. - The balloons are equipped with self sealing inflate inlet, which can seal on its own when being charged moderate air, glue or tape are not needed. - Create the perfect magical memories with this party pack balloons made of durable Mylar- high quality aluminum foil material. - The balloons are equipped with self sealing inflate inlet, which can seal on its own when being charged moderate air, glue or tape are not needed. - Foil silver colour star shape balloons are beautiful and fun addition to any party.