Britax Child Safety Inc. is recalling about 60,000 car seats because children can bite off a piece of the harness pad and choke on it.
The recall covers Boulevard 70-G3, Advocate 70-G3 and Pavilion 70-G3 models sold in the U.S. and Canada.
U.S. regulators say the seats were made with softer chest pad material that can be bitten off and chewed by children.
Britax says in a letter to the government that it has three reports of children biting off pieces and gagging on them.
The seats were made from June 11 to Aug. 31.