Engineered for outdoor use with an average flying time of 35-50 hours* these balloons pack a powerful promotional punch! Great for car lots apartment complexes realtors & more! *Because the filling and usage of display balloons is beyond our control no performance or longevity guarantee can be made. WARNING: CHOKING HAZARD Children under 8 years can choke or suffocate on uninflated or broken balloons. Adult supervision required. Keep uninflated balloons from children. Discard broken balloons at once.