Propsicle number 25 foil balloon in silver finish, 16 inches tall, for birthday decoration at home. The pack contains one 16 inch silver number 2 foil balloon and one 16 inch silver number 5 foil balloon, which line up side by side to read 25. An inflation tube is included. The balloon has a self sealing valve at the bottom. Insert the inflation tube or a pump nozzle into the valve, blow air in until the balloon is roughly ninety percent full, then press the valve opening gently to seal it. It can also be helium filled at a balloon shop if you want it to float. Stop short of completely full, since an overfilled foil balloon can split at the seam. A small hole at the top takes a thread or ribbon, so the balloon ties onto a wall, curtain rod, backdrop frame or balloon arch without tape or any extra fitting. Aluminium foil deflates through the same valve, which means you can fold the balloon flat after the party, store it and use it again next year. It suits a 25th birthday, kids and adult birthday party decoration, cake table styling and photo booth backdrops. Pair it with Propsicle fringe curtains, happy birthday banners, confetti and latex balloon kits when you are building a full theme setup. Foil balloons are sensitive to extreme temperature changes and extreme heat can expand the gas inside and burst the balloon. Foil balloons may conduct electricity, so use only non metallic ribbon. Adult supervision is required for children under 36 months.