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.Decorate for a birthday party or special occasion with these magical rainbow balloons. Pair these balloons with other styles and designs to create a beautiful balloon bouquet.Details:Includes assorted colors11" (27.9 cm) inflated height50 balloonsLatexRequires helium or air inflation