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Poc Cortex DH MIPS Full Face Helmet - £419.99

The Poc Cortex DH MIPS Full Face Helmet is a lightweight full face helmet that has an advanced carbon shell wrapped over POC’s patent pending aramid reinforced multi-impact EPP in-mould liner. The double overlapping shell and POC’s patented VDSAP allows for a fully ventilated helmet with maximum comfort, without sacrificing penetration resistance. Cortex DH is equipped with the patented MIPS system to reduce the rotational forces to the brain in the case of an oblique impact. MIPS (Multi-Impact Protection System) MIPS is a system used to reduce the rotational force to the brain in case of oblique impacts. Accident statistics show that the most common accident occurs in an oblique impact to the head, resulting in a rotation of the head and brain. The brain is more sensitive to oblique impacts than radial impacts. In a helmet equipped with MIPS technology, a low friction layer separates the shell and the inside of the helmet. When subjected to an oblique impact, the low friction layer allows a small controlled rotation of the shell relative to the lining.

Multi-Impact Performance: To date, both traditional hard shell and in-mould helmets have relied on Expanded Polystyrene (EPS) for shock absorption. EPS absorbs energy by plastic deformation on impact and results in permanent deformation. As a consequence, a helmet liner made of EPS will not be as good absorbing repetitive impacts. Most of POC’s bike helmets use a liner of Expanded Polypropylene (EPP) instead of the traditional EPS. The difference between the materials is that EPP does not deform permanently, which means it’s suitable for absorbing repetitive impacts. EPS vs. in-mould helmets: Traditionally, there have been two types of bike helmets on the market. First, there is the thick hard shell helmet with a shock absorbing liner of EPS. A hard shell helmet provides good protection against penetration and is durable. However, the nature of the stiff outer shell also has its drawbacks. On impact, the hard shell causes an abrupt stop of the head. This increases the risk of brain injuries and whiplash injuries are more likely as hard shell helmet is more prone to rebound on impact. The second type of traditional bike helmet is the in-mould type. These helmets have a thin shell of polycarbonate moulded together with an EPS liner. With this construction any energy on impact is well absorbed, as the thin shell allows the helmet to deconstruct on impact, transferring less stress to the brain and head, which results in minimal rebound. Traditionally, in-mould helmets have disadvantages when it comes to resistance to penetration and durability. VDSAP (Ventilated Double Shell Anti-Penetration): The safety requirements for ski and bike helmets are similar, but bike helmets call for some additional features to enhance ventilation and comfort. Good ventilation, however, also poses problems as open vents decreases the helmet’s protection against penetration. This is a serious risk, especially for downhill riders, since they are most likely to be exposed to hazardous objects at high speed. To be able to come up with a helmet that is penetration resistant, performs well upon impact and still is well ventilated, Poc developed their patented VDSAP with double overlapping shells. VDSAP has two ventilated shells that are offset for maximum penetration resistance and management of heat, perspiration or water. The inner shell is an extremely thin layer of polycarbonate and the outer shell is made of carbon fibre or injected plastic, depending on model. These helmets represent a unique way of thinking in helmet design.

Usage:

DH/Freeride

Shell construction:

Carbon outer shell, Multi impact liner, Thin PC inner shell with a Aramid penetration barrier. Ear chambers designed for balance and hearing, Chin bar constructed for optimized protection and easy breathing

Ventilation:

Penetration-proof ?ventilation system with airflow channels between the two shells

Visor:

Adjustable visor protects your eyes from rain, sun, mud?and tree branches

Safety Approval:

Certified EN 1077B, EN 1078, CPSC 12.03

Weight:

1000g

On sale at Evans Cycles

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