Open face helmet with one hand adjustment and their very own Conehead technology

Product Overview

Overall rating:

Score 7

Seven iDP M2 helmet


  • One piece pad can be easily washed.
  • Well ventilated.


  • Tightness across the brow when cranking up the dial.


Seven iDP M2 helmet review


Price as reviewed:


Internally, the Seven iDP M2 helmet uses a dual-density foam construction, which the company dubs Conehead technology.

We’re not sure if this features the same interlocking cone shapes we’ve seen inside Kali’s downhill helmets, but either way, by compressing easily, the softer material deals with smaller impacts and the harder stuff kicks in when things get really serious.

>>> Best mountain bike helmets

Seven iDP M2

Neat and tidy inside Seven iDP’s M2

To maximise airflow, the M2 has 10 forward vents to suck in air, and nine exhaust ports to push it out again. A handy insect screen is built into the front sweat pad, and this is also a large single piece, so can be laundered easily.

Up top there’s a matching peak, attached using low-profile metal screws. It’s not really adjustable though; more tweakable, with just over an inch of movement.

Watch now: 29in Trail bike of the year

The M2 extends down at the back, but feels perched on the head compared to the Giro and Bell helmets.

We also had to crank up the dial to stop it rocking side to side, which caused quite a bit of tightness across the brow.


Sizes:XS/S, M/L, XL/XXL