These bubbles start off like just ordinary, soap solution bubbles, but they don’t pop immediately. The non-toxic solution is very thick and when the bubbles are blown, the air actually hardens them making them stronger and more durable than other bubbles. We played with these in the office and actually discovered several bubbles still intact 3 hours later! They can even be stacked in your hand. Packaged in a 5 inch long, 3/4” diameter plastic tube.