... .2g 4. Size: 9", 12". balloonI.balloon,latex balloon,advertising balloon,birthday balloon,party balloon.II.we have different weight balloon:1.5g,1.7g,1.9g ... if you prefer. Another option is to put latex or foil onto a plastic cup and stick which is a safer ... in the late 1970s, some more expensive (and longer-lasting) foil balloons made of thin, unstretchable, less permeable started being produced ...