We bought this XXL product because we were invited to a garden party at which each guest should bring a game machine. With two large Pustefix rings (PUSTEFIX ring size) we along with 30 other guests the liter Pustefix "blown away". Here some giant soap bubble has succeeded (1-2m long).
When the bubbles, especially in the summer, once no longer want it really helps the liquid to refrigerate.
We can recommend the Pustefix XXL Refill unrestricted - an article of great fun.
