Beneath the shell is a heavily channelled EPS (expanded polystyrene) core that offers far more ventilation than your usual aero lid. The large base vents at the temple also feature textured grippers to hold your glasses when you're not wearing them. that an individual who suffers a collision, fall, or other blow to the head while a person is wearing a The ARX Plus is particularly impressive at the front, where its large internal channels and a well-vented brow prevent the build up of sweat. Vertical adjustment may be limited to three press-studs offering 20mm of adjustability, but it proved perfectly adequate in practice. The small rear dial offers true micro-adjustment, which helps get a precise fit.

The fit should suit most head shapes, with the Mindset rear cradle offering plenty of vertical adjustment and the dial allowing you plenty of adjustability around the circumference of your head. Specialized S-Works Prevailthat particular model of helmet. Users are warned not to remove, reposition or otherwise tamper with the The first thing you notice about this road bike lid is the streamlined sporty design of the Foray. Plenty of venting at the front and big exhausts at the rear offers a great through flow of cooling air, even on the hottest summer rides. The Rivale's shape is more rounded than most aero helmets. The internal padding is minimal yet well placed, and the micro-adjust dial offers plenty of tensioning to keep it securely on your head. We especially loved the 4cm vertical adjustment in the retaining cradle, which enables you to situate it in just the right spot.

With its sweeping, almost conventional shape, and 22 sizeable vents, the Z Alpha looks very open for an aero helmet. The snap-on front cover is said to provide the biggest aero gains at over 40kph. It only hides the central four vents, but has a slot to channel some air through. or death or loss of or damage to property, arising out of user’s participation in athletic, recreationalI’ve worn a Giro Synthe Mips on and off for a few years now; it’s my go-to road helmet. Being au fait with its Roc Loc closure system and Mips interior – designed to rotate with the helmet in the unfortunate case of any ejector seat moment, rather than digging in and jarring the skull on impact – pulling the Giro Foray on to my head for the first time felt satisfyingly familiar. At almost any speed and head angle there's a remarkable through-flow of air. It also comes with plugs (for winter rides or even faster aerodynamics) that go into the five frontal ports. made by Mips. Warning: the Mips system in a helmet has been positioned in accordance with specifications

Deep internal channels align with the large frontal vents to rush cooling air across your cranium, and the horizontal brow vents do a fine job of managing sweat and drying the front pad. It's very good for glasses storage when not wearing them too. Zero RH+ Z Alpha MIPS It's worth noting that this is an older version of the Velocis and we have the latest generation of the helmet in for test currently. Giro Foray MIPS helmetAdding MIPS increases the weight — the large now weighs 282g — but the increase is just 20g more than the standard ARX. And frankly, low weight is not the first thing we look for when it comes to safety. With a Roc Loc 5 retention system at the rear, the Giro Foray is easy to adjust on the fly with a single hand. You also get height adjust offering an even better fit