- Riding in high temperatures, riders need all the airflow they can get
- Making a helmet cooler, without losing its safety rating, is challenging
- Specialized engineers have made a breakthrough
with this new road helmet
South African road riders know the value of ventilation. Even when you are rolling along at nearly 30km/h, the ambient temperatures on a midday road ride can be fatiguing.
Cyclists know that ventilation of the head is an important way of keeping your overall temperature regulation on the right side of comfortable, and Specialized has now revealed a new helmet that promises to help do that.
The American cycling brand has applied some clever industrial design to its S-Works Prevail II Vent. From most angles it might look like many other aerodynamic road helmets, but when viewed front-on, the S-Works Prevail II Vent is clearly different.
To achieve the desired increase in overall airflow and ventilation, Specialized’s designers and structural engineers radically increased the flow channel which sits in the middle of the helmet’s safety structure.
Less is more
By removing the seven foam ribs that ordinarily bridge the helmet’s central flow channel, Specialized achieved a 20% increase in the vented area. Not only is there more surface area to directly cool, but the airflow is accelerated by 18%, which helps make the S-Works Prevail II Vent the coolest helmet that Specialized has ever made – literally.
All helmet design is a compromise between structural safety, comfort and airflow. To provide the required level of crash safety, despite having removed so much bracing material from the S-Works Prevail II Vent’s centre structure, Specialized use robotically spun Aramid ropes, to link the helmet’s two lobes together.
Inside the S-Works Prevail II Vent, there is also the latest Swedish rotational energy absorption system: MIPS SL. This helmet liner allows for up to 15mm of rotation in any direction and can reduce the impact of a crash on the brain’s soft tissue.
Specialized has also sourced a redesigned MIPS padding fabric, featuring a perforated ripstop backing, allowing for even better thermal management.
The new S-Works Prevail II Vent is available in four colourways and has a reference helmet weight of 252g.