Product details:

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, an 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. Mountain 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, an 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.Shell Material: polycarbonate
Claimed Weight: 11.9oz (338g)
Ventilation: 15 vents
Fit Adjustment: float fit dial
CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older