Fox Mainframe bicycle helmet with MIPS, optimized for use on the trail. The helmet is made with several air holes, which help keep the head cool. It is possible to remove the moisture-absorbing lining and wash it in the washing machine. The helmet has the MIPS system, which acts as additional protection for the skull. In the event of a hard impact on the helmet, the MIPS system absorbs and redirects the force that would otherwise injure the head.