The Bell Super DH Spherical MIPS MTB Full Face Helmet enhances our ability to address high-speed and low-speed impacts, as well as rotational impacts. Think of it as “comprehensive protection,” with the added bonus that can design better helmet ventilation, too.Bell Super DH Spherical MIPS MTB Full Face Helmet FeaturesFusion In-Mold polycarbonate shell - A process pioneered by Bell bonds the helmet's outer shell to the EPS foam liner to create a sturdier helmet.Progressive Layering utilizing two layers of foam: a hard layer against the outer shell closer to the point of potential impact, and a less dense layer closer to the head. Each layer has a thin hard shell molded into it.Float Fit DH with Fidlock Buckle - A comfortable and secure fit system featuring an easy-to-turn rubber overmolded dial for adjustmentsOverbrow Ventilation features intake ports on the brow of the helmet to usher in cool air and push it through the air-channel matrix for full-head ventilation19 helmet vents, 2 brow ports, 4 chin bar ventsWraparound chin bar: a removable protective chin bar, designed for trail riding adapability -- no tools required ... More info