The Consumer Product Safety Commission cites concern about too little oxygen and carbon dioxide buildup in the inflatable spheres known as "water walking balls." The commission is urging people to stay out of them because of a risk of suffocation or drowning. One company that sells the water balls says on its website that there is enough oxygen to last 30 minutes. (Associated Press/Consumer Product Safety Commission)
This undated handout photo provided by the Consumer Product Safety Commission (CPSC) shows a baby doll on a sleep positioner. The government is warning parents and caregivers to stop using infant sleep positioners _ a soft fabric products that anxious parents put in the crib to keep babies safely sleeping on their backs. (AP Photo/CPSC)
This undated handout photo provided by the Consumer Products Safety Commission (CPSC) shows a Delta crib. More than 2 million cribs from seven companies were recalled Thursday amid concerns that babies can suffocate, become trapped or fall from the cribs. (AP Photo/CPSC)
This undated handout photo provided by the Consumer Products Safety Commission (CPSC) shows a Delta crib. More than 2 million cribs from seven companies were recalled Thursday amid concerns that babies can suffocate, become trapped or fall from the cribs. (AP Photo/CPSC)