Waste of money, would not repurchase.
This lasted less than twelve hours before the 'button' tore and popped open. The inside contents look, smell and feel like crayola model magic. For the cost of a pack of balloons and some of the aforementioned model magic, you could make longer lasting versions of the same product (just use two balloons-overlap them to cover the hole).
On the plus side, I can use the model magic that popped out and turn the silicone 'balloon' into an anti-slip grip for the bottom of my paint water glass, so I suppose it's not totally useless.