Stanley is recalling 2.6 million mugs sold in the U.S. after the company received dozens of consumer complaints, including some users who reported getting burned and requiring medical attention.

Stanley has issued a recall for 2.6 million of its popular steel mugs after several customers said they were burned to the point of needing medical attention.

Stanley is recalling 2.6 million Switchback and Trigger Action travel mugs in response to a potential safety issue with their lids, the company said.