rh+ Helmet collection. Ready for any ride.

rh+ helmets offer safety, comfort and a lightweight feel to modern cyclists who specialise in competitive, urban or simply recreational cycling.
rh+ Design combines these features in a range of unisex helmets which provide specific, detailed and high-performance Design solutions for each and every possible kind of ride or cyclist.

Ha avuto il lancio ufficiale in occasione della seconda tappa del Tour de France 2017 grazie alla lunga fuga in cui è stato protagonista Yoann Offredo, corridore del team Wanty-Groupe Gobert.

Il suo progetto si ispira alle forme e al design del mondo automotive, offrendo un ottimale flusso di aria sia all’interno, per la miglior ventilazione, sia esternamente, per ottimizzare l’aerodinamica del ciclista.

La calzata è perfetta grazie al nuovo divider a Y e al sistema di ritenzione Power FIT EVO. Grazie a una particolare lavorazione interna è possibile alloggiare occhiali sia con asta dritta sia con asta ricurva velocemente e con grande stabilità.

Z Alpha: never a vented helmet has been so fast.

Aerodynamics is an exact science, although changes in speed and body shape mean that its rules are not universally applicable. The size and shape of the individual cyclist, surrounding atmospheric conditions and specific requirements are also fundamental. We began with an in-depth study into how air flows around a cyclist’s body in motion, in order to understand how helmets fit in to the overall picture of cycling aerodynamics. We then set ourselves the further challenge of verifying our findings in our wind tunnel lab. This gave us the chance to consolidate and refine our Design. Next, we went even further by asking real cyclists to test our helmets in real situations. This is the only way of ensuring optimum Design; we know that testing in an artificial situation is never enough. An individual cyclist’s height, the angle of their head, how the helmet sits on their head, the size and shape of their torso and face, how they arch their spine… these are just some of the variables that have a significant impact on helmet aerodynamics.
Advanced Aerodynamic Design
z alpha project

Our Powerlogic Lab set itself the difficult task of creating helmets that offer cyclists advanced aerodynamic performance, without compromising on features like ventilation and weight. We found a successful way of balancing the flow of air inside the helmet with the air that flows in various directions around the outside.

We called this solution Advanced Aerodynamic Design. It features a series of advanced aerodynamic characteristics that together provide the Z Alpha with the best balance between ventilation and aerodynamics available on the market today. This helmet came out as the fastest in real time trials and consistently offered the highest level of ventilation; it offers even better ventilation than many traditional open helmets currently available.

The mechanics of a crash
Although no two crashes are identical, two main types of force - linear and rotational - are related to the majority of brain injuries. Most real-world impacts actually subject your brain to a combination of both linear and rotational forces.

How does it work
There are three main components to a MIPS-equipped helmet: the EPS liner, the Low Friction Liner and an elastomeric attachment system between them. In an impact, the elastomeric attachment system stretches to allow the EPS liner to rotate independently around your head. How much does the system move? Just a couple of millimeters. But that few millimeters of movement can reduce the amount of rotational force that may be transferred to your brain.

The more red the more strain to the brain. Finite element model illustrating strain in the brain from a similar angled impact when the user is wearing a helmet without MIPS and a helmet with MIPS.
Experimental and numerical tests, using a Hybrid III crash test dummy head with nine accelerometers measuring accelerations in all axis, has shown a reduction of the forces to the brain.
Sizing system

Power Fit Evo
Evolution of the Power FIT 2 with slimmer design and enhanced occipital support and even more stability.

Power Fit 1
Occipital fitting system that enables you to adjust the helmet circumference perfectly to your head to ensure fit and comfort. Made with bi-injected engineering plastic for greater flexibility and lightness.

Power Fit 2
Adjustable system that combines the Power FIT 1 with the opportunity to select three different occipital height positions. Fitting, lightness and breathability are secured by the super light.

Comfort Fit 2
A light and essential multi-adjustable system that lets you fine-tune the circumference and height in three different positions to guarantee maximum comfort.