How long can you make this ball float? Challenge you family and friends! This classic game of science demonstrates Bernoulli's Principle, the Law of Pressure Differential. Gently blow into the 6" pipe and watch the ball float! Measures 6.25 x 2.12 x 1.62 Ages 3 & up. WARNING: CHOKING HAZARD Toy contains a small ball. Not for children under 3 yrs.