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Fibre glass is a popular construction material for crash helmets, sometimes also known as glass-reinforced plastic or GRP. Fibres of glass are laid in a polymer such as epoxy resin or a thermoplastic to produce a very strong and durable matt of material that’s relatively cheap to produce but easy to mould into complex shapes. In a crash helmet, it makes for a lightweight and strong helmet with a shell that’s less brittle than carbon fibre and able to stand significant abrasion as well as absorb substantial impacts before cracking.

Find out more about fibreglass helmets here, or read on to find all our articles and reviews of crash helmets with shells made of fibreglass.