Steve Spangler's Solar Bag with String 25ft Long 2 Pack

TEACH THE POWER OF THE SUN: Steve Spangler's Solar Bag allows you to harness the power of the sun as it heats the air inside the bag until lift-off! LEARN ABOUT A VARIETY OF SCIENCE CONCEPTS: Steve Spangler's Solar Bag engages students in discussions of density air pressure buoyancy and more! Manufactured by Steve Spangler Science. EASY TO USE: Steve Spangler's Solar Bags are lightweight and easy to fill! ACTIVITY GUIDE INCLUDED: Steve Spangler's Solar Bag comes with an activity guide and student worksheets for the perfect lesson on solar science! INCREDIBLE SCIENCE: Fill Steve Spangler's Solar Bag with air and let solar energy make it float!