We love the Voroni helmet by FreeJump for its beautiful design and fit, as well as its extensive protection! 
This is for the Helmet Shell ONLY - you can find the right liner for your helmet here: Voronoi Helmet Liners

The expertise of the best Italian designers, combined with the strength of our research and development team and the craftsmanship of our French workshop, results in an absolute requirement for safety and elegance, serving a new generation of helmets.
The visor of the Voronoï helmet is detachable and easily interchangeable. Two visors are available: the wide visor (for men and women) and the short visor (for eventing). The wide visor is flexible to ensure safety in the event of a frontal impact.
The aerators are inspired by the distinctive geometric pattern that gives the helmet its name. The aerators are designed to optimize airflow for exceptional thermal regulation. The Voronoï pattern, with its irregular geometric cells, creates a unique and captivating aesthetic reminiscent of dragonfly wings. Each cell in the Voronoï pattern is carefully positioned to maximize airflow through the helmet, improving ventilation and breathability.
The outer shell. The thermoplastic polymer shell is a reliable and high-performing solution designed to provide optimal and long-lasting protection.
The inner shell of the Voronoï is made from one of the most absorbent EPS materials on the market. A rib reinforces the structure and ensures crush resistance well above the standards. 
The inner lining of the Voronoï helmet is made from high-quality Italian fabric to maximize comfort, breathability, and head support. It can be unclipped and washed at will (wash at 30°C and tumble dry) to ensure comfort and hygiene. Sizes available: 52 to 62.
Protecting the temple reduces the risk of concussion to the most fragile part of the skull: the temporal area. Behind the temporal bone is the meningeal artery. The slightest trauma can damage this artery and form a hematoma, compressing brain cells and leading to serious after-effects, even death. The Voronoï helmet is the first riding helmet to account for the temporal area. The rigid shell protects the temple by absorbing and distributing the shockwave over a large surface area, while preventing it from reaching the temple if the impact force were to deform the helmet's tip.  IMPORTANT: The temporal piece on this model CANNOT be removed.
The Voronoï chinstrap offers unrivalled breathability, comfort, and support, and ensures a perfect fit to prevent the helmet from tipping over.

The Voronoi helmet is available in three shell sizes: Small, Medium, and Large. Find the right liner for your helmet here: Voronoi Helmet Liners

Voronoi Liner Sizes

• The Small shell accommodates sizes: S-52, S-53, S-54, S-55, and S-56.

• The Medium shell accommodates sizes: M-55, M-56, M-57, M-58, and M-59.

• The Large shell accommodates sizes: L-58, L-59, L-60, L-61, and L-62.

Choosing the right size for your helmet will give you optimum protection. Before using your helmet, make sure that it fits your head properly. The front edge of the helmet should be positioned about 2.5 cm above your eyebrows. Place the helmet straight on your head. Give yourself enough time to make your choice and make sure it fits the shape of your head. It should be tight without compressing you. Once fitted and closed properly, it should not be loose and should not be removable. Especially for children, never choose a helmet that is too large on the basis that they will grow into it.