Peloton is recalling 2.2 million units of its original bike after learning that the seat post can break during rides, putting users at risk of falls and injuries, according to a statement from the U.S. Consumer Product Safety Commission.

The company reported at least 35 instances of seat posts breaking, which resulted in 13 injuries due to falls from the bike, including a fractured wrist, lacerations, and bruising.

The recall affects “Original” Peloton bikes, model number PL-01, specifically those sold between January 2018 and May 2023, according to the company’s website. Only machines sold in the United States are affected. The recall does not include bikes sold overseas or the newer “Bike+” model.

“Consumers should immediately stop using the recalled exercise bikes and contact Peloton for a free repair,” the commission said. “Peloton is offering consumers a free seat post that can be self-installed.”