huge 36 inch balloon 
	
round (rather than the usual teardrop shape)
	
float much more slowly than small balloons
	
prolong their life by blowing up with a pump (keeps them dry)
	
tie with a ribbon if you want to deflate them betwee use. (We use several twists, then a tight bow). Or knot as usual
	
you'll need a pump to blow them up or you'll go squiffy!