DescriptionSqueeze a flat balloon and watch it self-inflate! Challenge students to offer an explanation. Ask your students to construct their own self-inflating balloon using water and baking powder, or vinegar and baking soda! Four self-inflating Mylar balloons are included . 14.5 cm flat dia. (5.75") Note: Inflated balloons are not lighter than air.
This product is shipped from our supplier's warehouse in CT, United States
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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