They are the only affordable balloons, which have are the 30 "on the head". That's a great thing, because these can be fixed so well on the ceiling. Due to old reviews I have only been the balloons blow morning and hung up (so not directly Platt are). BUT: this would not have been necessary! On the contrary, I thought, the balloons quickly lose the air I wanted to only depend again when the air is out. The balloons hanging still, and the 2 weeks of the birthday ...! Would I buy again and again!