Mountain biking is a demanding sport –  when it comes to gear compromises are never a good idea. The 4Forty was built to protect You in all Your wild trail rides and to withstand all challenges. The helmet offers generous ventilation, the comfort of Bell's Float Fit Systems with built-in Sweat Guide, Extended Rear Coverage, a Full Hard Shell and an adjustable Visor. Bell - 4Forty Mips\u00ae 2023 Helmet matte