Its MIPS system adds to the cost, but for that you are also getting great reassurance, and along with the super-adjustable Roc Loc 5 cradle is an excellent fit. Four internal pads keep things comfortable and five pronounced internal channels ventilate the majority of the head very well at all speeds, making this model an attractive, safe and great-value choice.

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.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. Our proprietary Super Fit™ sizing system is based on “human scale factors” data and over 25 years of handcrafting helmets. By creating helmet moulds in up to 4 adult sizes to match the human body’s form, our Super Fit™ sizes comfortably and securely fit riders, and feel like they are custom made just for you. The Lazer Tonic is an excellent budget road helmet that looks and feels like a much more expensive lid. At 230g for a Medium, it weighs the same as helmets more than twice as expensive, such as the Specialized S-Works Prevail or the Bontrager Velocis. One note was the sizing: generally, I will wear a size small in helmets, but the Giro Syntax MIPS is on the cusp of being too small. Perhaps due to the addition of an XL to the range, the rest of the sizes have shifted downward a little compared to what I'm used to. As a result, I'd suggest anyone between sizes opt for the size up. Verdict The MIPS system, or Multi- Directional Impact Protection System, employs a slim, flexible plastic cap that's perforated to match the helmet's vents, and four elastic fixings allow it to float within the inner EPS foam shell, creating a slip-plane, much like the brain's own, to slow or reduce rotational energy transfer. Kask Protone

This lid's aero emphasis means ventilation is reduced to a single central vent, which is helped by internal channels that begin at the brow. In normal conditions it's very comfortable, with a constant flow of air across the head and no obvious hot spots, but it probably wouldn't be our first choice for a summer Alpine assault. While we won’t comment on the overall efficacy of helmets in general, it’s worth noting that all helmets sold in the EU must conform to the EN 1078 European Standard (and therefore have a CE mark). In the US, they must be CPSC-certified. made by Mips. Warning: the Mips system in a helmet has been positioned in accordance with specifications The Giro Foray is a sleek, stylish road cycling helmet that offer great value. The tough In-Mould polycarbonate shell to offers the best protection as you ride.or death or loss of or damage to property, arising out of user’s participation in athletic, recreational law, Mips expressly disclaims all warranties of any kind, express or implied, other than those expressly The Z Alpha is less specific than some aero lids and all the better for it, with great ventilation and classy looks. You can opt to have MIPS or not, but a little extra outlay for enhanced head protection is a no-brainer in our book. Catlike Vacuum 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.

With a very competitive weight (228g in size Medium), ample venting and good looks, the Bontrager Velocis stands toe-to-toe with similarly priced competitors such as the Giro Aeon or the Specialized Prevail. MET's Rivale tips the scales at just 257g (for a large) and is said to save 3 Watts at 50kph, equating to a second's advantage over comparable vented helmets at the same pace. As well as that, it complies with CE, plus the tougher Australian AS and American USPC standards. Giro helmets are developed utilizing our proprietary Wind Tunnel™ ventilation system. This elaborate design combines active vents in the helmet’s shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider’s head while forcing heat and stale air out. It’s the most effective cooling system available, and a difference you can feel every time you ride.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 I’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. The ventilating aero mesh on either side of the silicone-edged sunglasses ports has been replaced by a finely ribbed plastic. The Giro logo and aero mesh covering the truncated tail's central port have gone too, and the only branding on the helmet is a single Rapha logo on the very top. The Foray drafts off the bold design language of our premium Synthe helmet, and offers many of our key features including durable in-mould construction and the Roc Loc 5 fit system with two-way fit adjustment. The slim design is very light, offers great ventilation and is available in three Super Fit sizes so that you can get a helmet that looks, fits and feels like it was made for you. MIPS models are available with the Multi-Directional Impact Protection System. We believe MIPS can redirect energy and offer more protection in certain impacts.

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 helmet The shell contributes to its 325g weight, but provides extra protection from accidental damage, while inside the padding is made from Merino wool for super-soft comfort.The Giro Foray MIPS pays more than a nod to Giro's range-topping Synthe aero helmet, with a smooth, rounded compact shell and truncated rear to maintain efficiency in all head positions. that particular model of helmet. Users are warned not to remove, reposition or otherwise tamper with the The occipital cradle of Scott's Halo Fit System has three heights and circumference adjustment is via a rotary dial. A clever separator keeps the straps far apart so they don't clash with your ears, all helping to make the Cadence Plus one of the best fitting and most secure helmets we've tried recently. The price for a top-flight lid with MIPS [Multi-directional Impact Protection System] additional protective technology is good. It's superbly comfortable and secure, and despite the MIPS system touching much of your scalp, manages to stay cool. Two central internal channels, plus the gap between the MIPS cradle and EPS shell, ensure good air movement even with the cover installed. In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mould helmets lighter and cooler than traditional helmets.