Bell: BUILT TO PERFORMBuilt with the same core design principles as the pro-level Z20, the Stratus combines lightweight aero efficiency with cutting-edge comfort technologies. The shape was refined for all-around road performance—ventilated for long climbs but still fast for the flats—and the integrated Float Fit system offers comfort and security with a streamlined fit and an oversized dial that’s easy to adjust with one hand. The Overbrow Ventilation system pulls cool air in through the front and pushes it through an air-channel matrix to reduce overheating. And thanks to the adjustable No-Twist Tri-Glides, the straps stay flat and properly positioned no matter how hard you’re hammering.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.Lightweight internal polycarbonate roll cageOverbrow 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 ventilation18 ventsNo-Twist Tri-Glides: Quick-adjust fasteners that help keep straps flat and properly positionedLightweight strapsSweat Guide pad design pulls moisture away from the brow pad and away from eyewearCE EN1078 certifiedCONSTRUCTIONFusion 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.Lightweight internal polycarbonate roll cageFIT SYSTEMFloat Fit - A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustmentsNo-Twist Tri-Glides: Quick-adjust fasteners that help keep straps flat and properly positionedLightweight strapsVENTILATION18 ventsWEIGHT265 grams (size M)