What is it?

A multi-impact, foldable commuting cycle helmet.

Some cyclists will be blissfully unaware – or simply ignore the fact – that it is recommended you replace your cycling helmet every three years even if there's not a scratch on it.

This is because every day environmental factors such as solvents and pollutants, coupled with minor knocks or dropping it, can accumulate to reduce the integrity of the helmet.

The Hedkayse One has been designed to be the world's first helmet that can withstand multiple impacts and still provide protection.

Good Points?

Among the Hedkayse's key features is its special Enkayse polymer that is supple enough to fold yet still incredibly durable compared to traditional polystyrene foam liners which crumple to absorb the impact.

A flexible membrane keeps the protective unit's form while folded in its space-saving shape. This means the helmet can be compressed and reduced in width by 50% – to a mere 13cm (5in) across – then snugly tucked into a bag without fear of damage.

This construction method gives the unit more sizing flexibility and a one-size-fits-all design of between 49cm and 58.5cm (19in to 23in). Not having to measure your head against online guides is a big bonus.

Bad points?

The Hedkayse is a tad more expensive than a casual commuter would normally pay for a helmet. At 495g it is heavier too.

Best for ...

Those who like consistency with comfort as there are few things more annoying than donning a new helmet – only to realise after five rides that it's starting to rub and slip despite being on the tightest setting.

Avoid if ...

Cycling helmets are not your thing. It's a personal choice: your noggin, your decision. I respect that.

Score: 8/10.

Hedkayse One, £150 (hedkayse.com)