Biodegradable helmet materials are materials that can break down naturally over time, such as plant-based foams, natural fibres, and bioplastics made from renewable sources. They are used in some helmets as an alternative to…
Vinyl nitrile foam is a soft, flexible foam used inside some helmets as a comfort or impact-absorbing layer, made by blending vinyl…
A thermoset helmet shell is a hard outer shell made from a resin-based material that hardens permanently when it is cured, so…
A thermoplastic helmet shell is a hard outer shell made from a type of plastic that softens when heated and hardens again…
Injection-moulded helmet shells are made by heating plastic pellets until they melt, then forcing the melted plastic under pressure into a steel…
Helmet shell thickness affects protection because the shell is the hard outer layer that first meets an impact: a thicker shell is…
A leather helmet liner is a soft inner lining made from leather, or from a leather-like material, that sits inside a helmet…
An air mesh helmet liner is a lightweight inner lining made from a breathable mesh fabric that lets air flow through the…
A wool helmet liner is a soft inner lining made from wool, or from a wool blend, that sits inside a helmet…
A bamboo fibre helmet liner is a helmet liner made with bamboo fibre, a natural fibre taken from bamboo plants, which is…
