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 issued a recall on 2.6 million of its popular steel cups, citing concerns about loose tops that have led to dozens of burn injuries, officials said Thursday.

Stanley is recalling 2.6 million Switchback and Trigger Action stainless steel travel mugs due to a burn hazard, the Consumer Product Safety Commission says.