These are Made of high quality aluminum foil, thick and auto-sealing, no leaks, can last for days when inflated. Give Your Big Party A Personalized Presentation With Foil Balloons! This Collection Of foil Balloons Features "ITS A BOY "& "IT? A GIRL"Bottle shaped blue, Pink color Twins Theme Party foil balloon, So You Can Mix And Match. Whether You'Re Celebrating A Shower Party, welcome party, These Shining Twins Theme Party Blue & Pink foil Balloons Are Perfect For Your Celebration. Mix And Match With Coordinating Foil And Latex Balloons, Polka dot balloons & balloon accessoriesITS A BOY Bottle shaped blue foil balloon X 1 & IT? A GIRL Bottle Shaped Pink Foil Balloon X 1Self sealing mylar foil balloonFor all occasions including birthday party,shower party,welcome party, 6 month birthday party, twins welcome party,Colour: BLUE, PINKAvailable IT? A BOY & IT'S A GIRL Bottle Shape Blue,pink Color Printed Foil Balloon