mySimple Products Custom, Fun & Cool {XL Huge Giant Size 33” Inches - 2.75 Feet} 1 Air Inflatable Mylar Aluminum Foil Balloon w/ Cute Adorable Jungle Wildlife Panda Bear Design [in White & Black]

Description

DESIGN & FEATURES: These balloons are manufactured using foil and polyester materials. Balloons made out of these types of material aren't porous, they're airtight-meaning gas isn't able to escape through the material itself. Helium might be able to escape through the neck seal, but if it's sealed tightly enough, this tends not to be a problem.