These silver 16 inch foil number balloons are perfect for any celebration, from New Years Eve to graduation. Made from high-quality, durable foil, they large number balloons are easy to inflate and stay afloat for days. Available in a range of colors, these eye-catching balloons are ideal for creating stunning photo backdrops or adding a festive touch to your party decor. Can be used both indoors and outdoors and are not helium supported.