JARGON

EN 1078

The European standard for cycle helmets, awarded to lids that pass four tests (guided freefall drop, angled anvil impact, flat anvil impact and strap strength test).

M.I.P.S.

Multi-directional Impact Protection System – a layer of plastic between the padding and liner that lets the lid rotate on the head to (in theory) reduce the transfer of rotational forces in a crash.

ROTATIONAL FORCES

In an impact, twisting forces can be transferred to the brain, making it rotate inside the skull. These can be as dangerous as direct blows.

E.P.S.

Expanded polystyrene – the crushable foam used in most helmets’ liners, which absorbs impacts as it deforms. Can only be ‘used’ once, so buy a new lid if you crash.

RETENTION SYSTEM

Internal band or cradle that keeps the helmet secure on your head. You can adjust the fit, usually via an indexed wheel, and sometimes the lid’s pitch/the height of the cradle too.

VERTICAL SPLITTER

A height-adjustable small plastic part that splits the chin strap in two so it can mount to two di erent points on the liner/shell and pass either side of your ears.