18th Birthday Balloon Weight 1 18th Birthday Balloon Weight Happy 18th Birthday Balloon Weight measures 3.25" x 2.5" An easy, decorative way to anchor balloons or a balloon bouquet for an 18th birthday party This mini gift bag balloon weight holds up to 15 12" latex balloons or 40 18" foil balloons Dont forget to combine this with other 18th birthday party supplies and party decorations from Unique