This nice Gag inflation pie I've given my husband ... somehow ers found not so great ;-) So the quality is really okay, fairly stable, with no bloat problems, lost even after a few days no air. Under the cake is a hollow hole, fits perfectly on the head as a hat. The birthday girl was sentenced to wear the hat, unfortunately, it became too warm. Logically, is indeed warm when no ventilation is there. Strong buy recommendation, so it can also be good further away.