Mountain biking is a demanding sport -- compromises and shortcuts when it comes to gear are never a good idea. The Bell 4Forty MTB helmet 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 and adjustable visor. 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.Key Features: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 overmoulded dial for adjustments15 vents for a cool head on the climbsGoggleGuide 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 certifiedOff-Road AchieverConstruction: 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.Fit System:Float 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 positionedWeight: 324 grams (size M)