7 idp m2 boa helmetmanufactured with an eps construction and 7 idp's conehead technology, utilising dual density foam to dissipate impacts more effectively and giving you a safer ride'. '.strtoupper('f')eaturing a longer rear for increased coverage at the back of the head'. '.strtoupper('t')he m2 also offers no shortage of ventilation with its 19 open vent ports circulating air around your head to keep you cool as you seek out fresh loam to roost and lips to send'. '.strtoupper('f')eaturesopen face all mountain designconeheadtrade technology utilising dual density foams in impact absorbing zones19 ventsfull rear head coveragecustom 7idp adjustable visorboa one hand dial fit adjustmentcustom 7idp liner for superior fit and comfortrapid adjust chin strapmesh covered front vents to stop bugs and debrisbuy 7 idp protection from chain reaction cycles, the world's largest online bike store.