Bell: OFF-ROAD OVER ACHIEVERMountain biking is a demanding sport -- compromises and shortcuts when it comes to gear are never a good idea. The 4Forty is built to withstand the rigors of a trail-riding life; with generous ventilation, the comfort of Float Fit and built-in Sweat Guide, extended rear coverage, a full hard shell, adjustable visor and integrated MIPS protection. Boasting the comfort, protection and broadly capable features of helmets costing twice as much, the 4Forty is a bantamweight, all-conditions, all-kinds-of-trail champion packing a heavyweight value.FEATURESIntegrated MIPS (Multi-Directional Impact Protection System) - MIPS is designed to reduce rotational forces that can result from certain impacts. By integrating the MIPS slip plane into the retention system, we are able to reduce complexity and weight for a compact, better ventilated helmet that fits more closely to the head.Fusion 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.Float Fit - A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS)15 ventsGoggleGuide adjustable visor: accommodates both goggles and glassesNo-Twist Tri-Glides: Quick-adjust fasteners that help keep straps flat and properly positionedSweat 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.FIT SYSTEMFloat Fit - A minimalist, lightweight fit system with an easy-to-turn rubber overmolded dial for adjustments (integrated with MIPS)No-Twist Tri-Glides: Quick-adjust fasteners that help keep straps flat and properly positionedVENTILATION15 ventsWEIGHT363 grams (size M)