The Mainframe is Fox's most affordable helmet but that doesn't mean a compromise on safety. The MIPS impact protection system dissipates rotational impact forces and the extended coverage at the back of the head means even greater safety. A plethora of venting holes and moisture-wicking liner keep your head cool, even on the hottest of days. Use the adjustable chin strap and cradle to dial in the fit for maximum comfort and protection. Product Code: EAHMP4AL0343 Unisex Fox Mainframe MIPS Helmet - Black | MTB Helmets UK