Being set away from the face, the Vivid lens also prevents sweat building up on the brow or nose like a pair of sunglasses which also stops it from fogging. Giro has used its Transform Air technology to produce a cliff on the peak of the helmet. This is claimed to reduce drag, passing air across it no different to a teardrop-shaped helmet without the drag associated with these helmets.

Giro helmets are developed utilizing our proprietary Wind Tunnel ventilation system. This elaborate design combines We’re unable to verify Giro’s claims, but 25mph is nearly twice as fast as I’d ride 160km. However, there is the argument – put forward by aerodynamicist Dan Bigham and others – that aerodynamics matter to slower cyclists at lower speeds even more, due to the extended duration out on the asphalt. protection. So whether you're hammering off the front, smashing an Ironman course, or laying down maximum wattage inGiro says its new Vanquish MIPS is the most aerodynamically efficient road helmet the company has produced to date – and nearly the best ventilated, too. Would I buy this over a Giro Synthe or the new Aether? No I wouldn’t – I don’t need to be more aero, I’m not a good enough rider to appreciate the difference – but I can understand the appeal of the Vanquish. Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.

When Giro officially launched the Eclipse Spherical, it made a big play of the helmet’s aerodynamic and ventilation credentials. Joe is fond of telling people about his 6ft 3in wingspan – despite only being 6ft tall – and that time he appeared on a BBC quiz show. Riders these days are paying more attention to safety than ever before, and it’s refreshing to see that Giro hasn’t merely glossed over that aspect in developing the Vanquish MIPS. As the name suggests, a low-friction MIPS liner is included as standard equipment, with the claimed benefit of reducing rotational forces transmitted to the brain — and, thus, the chances of a traumatic brain injury — during an impact. That MIPS liner is molded as a single piece with the Roc Loc Air retention system to improve fit quality and airflow. During riding, the helmet ventilates well, with the cold days even too well, for hot days where there is a lot of climbing, I would personally choose a more open helmet because the helmet ventilates less well, until you make enough speed in the descent. Designed to manipulate airflow, a weight-saving in-mould process enabled Giro to optimise their design to be exceptionally aerodynamic and breathable. Strong, impact damping and light, the protective EPS foam liner is bonded to a four-piece polycarbonate shell that has been shaped and optimised with TransformAir technology and ten wind tunnel vents. Improving riding efficiency and shaving seconds off your personal bests, the TransformAir 'cliff' effectively manipulates airflow to reduce drag and improve aerodynamics.

Giro Eclipse Spherical performance

I’ve only been able to sample the new Giro Vanquish MIPS helmet on a single ride so far, although with 130km (81 miles) of distance, a substantial 1,200m (4,000ft) of climbing — nearly all of which came in a single ascent at the ride’s halfway point — and warm, humid temperatures that hovered around 29°C (84°F), there was still opportunity to get a good feel for how it would perform over a longer period. True to claims, ventilation performance seemed better with the shield in place than stowed, too (perhaps due to the fact that doing so partially obscures the forward-facing vents).