Latex balloons stay fully inflated for up to 24 hours post-inflation. If you are looking for a longer inflation period, Mylar®/foil balloons typically stay inflated for up to five days.Great for birthdays, baby showers or just because, this metallic latex balloon makes a wonderful addition to a balloon bouquet or arch. Combine with additional latex and foil balloons in complementary hues for a balloon arrangement sure to make someone's day special.Details:Available in multiple colors11" (27.9 cm) inflated sizeMetallic finishLatexRequires air or helium inflation