Radioactive Symbol Balloons (16 pcs) by Nerdy Words (Yellow)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>12" (30 cm) latex balloons， helium quality. Approximate float time: helium 8-14 hours， air 5-7 days. Ships uninflated.</li><li>Set of 16 balloons (Yellow).</li><li>Printed (one side) with a radioactive symbol design.</li><li>100% biodegradable.</li><li>Perfect for birthdays， graduations and science lab gatherings.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41z0LSJOtqL.jpg" noproxy>