What is Koroyd®?
Koroyd® is an advanced impact-absorption core technology originally developed from aerospace safety research, now applied in high-performance helmets and protective gear.
Its distinct structure consists of thousands of thin-walled, welded co-polymer tubes arranged in an open-cell matrix.
The tubes collapse in a controlled manner upon impact (sacrificial plastic deformation) rather than acting like a spring—a key difference compared to traditional energy-absorbing foams such as EPS (expanded polystyrene).
In short: when you ride hard, crash, or take a hit, a helmet with Koroyd is designed to absorb more of the impact energy, with less weight and better airflow than older-generation liners.
Why Koroyd matters for snow / helmet applications
For a snow-sports protection brand like REV, integrating Koroyd offers several strategic advantages which directly align with your “engineered for safety” positioning:
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Superior energy absorption
Koroyd’s welded-tube structure crushes immediately upon impact, absorbing force consistently and reducing the energy transferred to the helmet wearer’s head or brain.
For instance, Koroyd claims that its material can compress through up to ~78% of its thickness during impact — meaning more of the material is actively used to absorb energy, compared to EPS which may densify prematurely.
In your messaging, this means you can legitimately say: “We chose Koroyd because it absorbs more impact, faster, across more of the liner”. -
Better performance for angled/rotational impacts
Snow-sports crashes rarely happen purely straight on. Oblique impacts (glancing blows) introduce rotational forces which are harder to manage. Koroyd’s structure helps here: by reducing the linear forces, it also helps reduce the subsequent angular/rotational motion of the head and brain.
This aligns perfectly with your earlier emphasis on “rotational-impact systems (e.g., MIPS®) and advanced energy-absorbing cores (e.g., Koroyd®)”. You can link Koroyd and MIPS together in your messaging: Koroyd reduces the energy transferred; MIPS handles what remains in rotational motion. -
Lightweight and breathable
A major challenge in premium helmets is balancing protection, weight, comfort, and ventilation. Koroyd gives a tangible benefit here: one source states the core is “95 % air” due to its ultra-thin tube walls (~0.06 mm) and open-cell structure — meaning significant weight savings.
Also, because the structure permits airflow and sweat evaporation, the microclimate inside the helmet remains cooler and more comfortable — a benefit especially relevant for backcountry, long runs, and aggressive sessions.
For your brand, this becomes a strong differentiator: “More protection, less weight, better ventilation” — exactly what premium snow riders want. -
Validated and future-proofed
Koroyd has been integrated into multiple markets (helmets, body armour, industrial protection) and backed by data. For example, a study found that industrial safety helmets with Koroyd reduced the “heat index” inside the helmet by up to 8 °F / 4.5 °C compared to traditional EPS mounted helmets.
This shows that Koroyd isn’t just a cool material — it’s proven in testing and offers measurable benefits. For REV, referencing this helps build trust in Western markets where consumers are tech-savvy.