The United States Consumer Product Safety Commission announced Thursday that Stanley is recalling 2.6 million Switchback and Trigger Action travel mugs due to a burn hazard.

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