The U.S. government is warning people to stay out of giant see-through inflatable spheres known as "water walking balls" because of the risk of suffocation or drowning.
The Consumer Product Safety Commission said March 31 it "does not know of any safe way to use" the products, which are popular at amusement parks, resorts, malls and carnivals. They resemble hamster balls but are large enough for humans.
People climb into the plastic, airtight balls and then roll around – or try to walk – on water in pools, lakes or rivers.
"We want to tell the public how dangerous these products are before someone is killed," said Inez Tenenbaum, chairman of the commission. "Our investigation into water walking balls will not stop with today's warning."
The agency is worried about too little oxygen in the balls as well as the buildup of carbon dioxide.
Another concern: the fact that the product has no emergency exit and can be opened only by a person outside the ball – a serious problem if a person inside the ball experiences distress.
The commission said it is aware of two incidents in which people were hurt.
In the first, a 5-year-old girl in Kingston, Mass., passed out last year while inside a ball for a brief time. In the other, a young boy suffered a broken arm when the ball he was in fell out of a shallow aboveground pool onto the hard ground.
The balls, the commission says, could also spring a leak or puncture, raising the drowning risk, especially with young children who cannot swim.
Calls to manufacturers such as Eurobungy USA in Miami were not immediately returned.
One company that sells the water balls says on its website that there is enough oxygen to last 30 minutes. It says a ride usually lasts about 7-10 minutes, and that the balls are not dangerous as long as they are used safely.
- Jenny from the Blog: Kids in Bubbles: Worst Idea Ever
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