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.

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.

Walmart is recalling about 850,000 stainless steel water bottles because the lid can “forcefully eject” and unexpectedly strike consumers — resulting in permanent vision loss for two people to date.