Walmart is recalling 850,000 water bottles after two people suffered permanent vision loss trying to open them. Customers reported being hit in the face with the lid when opening the Ozark Trail brand stainless steel bottles.

Walmart has issued a recall for a popular water bottle due to safety concerns. The U.S. Consumer Product Safety Commission (CPSC) published a notice on July 10, reporting that the recall affected approximately 850,000 water bottles sold in Walmart stores and online across the United States since 2017.

The lids on the 64-ounce stainless steel bottles can eject and strike consumers, two of whom reported permanent vision loss as a result, safety regulators said.