Best bike helmets: 5 picks for road, commuting and value

The Synthe is the helmet Giro has built its road range around, and the MIPS version is the one to go for if you want a single lid for club runs, sportives and the daily commute. The shape is aero-tuned without turning into a sweatbox: internal channelling pulls air over the top of the head, and Roc Loc 5 Air adds a vertical adjustment so you can set the cradle where it actually sits on your skull rather than where the box says it should.

MIPS adds a low-friction layer between liner and head to help with angled impacts. It isn't the cheapest way into a decent road helmet, and it isn't the deepest-coverage lid here — if you ride in heavy traffic, a commuter shape gives you more protection at the back.

POC built the Ventral Air around airflow, with large forward vents feeding deep internal channels that exit at the back. On a long climb in July or a warm chaingang, that is the difference between a clear head and a soggy one. The shell is smooth and clean-looking, the straps are easy to set once and forget, and a MIPS layer sits inside.

It is a premium helmet, and the ventilation focus means it gives away a little to dedicated sprint lids on pure aero. Rear coverage is road-typical rather than generous, so it suits fast riding better than stop-start city commuting.

The Protone Icon is the helmet riders reach for when comfort matters more than saving the last watt. The padding is generous and quick to dry, the Octo Fit cradle grips evenly around the whole head rather than pinching at the sides, and the low-profile shape looks tidy on most riders. Kask does not use MIPS; instead the range is tested to the brand's own WG11 rotational-impact protocol, which is worth knowing if MIPS specifically is on your must-have list.

It is an expensive helmet, and on a still, hot climb it will not feel as airy as the POC. What you are paying for is fit, finish and the sort of comfort that stops you noticing the helmet at hour five.

The Align II turns up on every first-proper-helmet shortlist, and for good reason: it includes a MIPS low-friction layer without anything like a premium price tag. Ventilation is generous for the money, the micro-dial cradle is easy to tweak one-handed while riding, and the shape suits a wide range of heads.

It is the sensible pick for a first road helmet, a spare for the winter bike, or a lid for a teenager who will grow out of it. What you give up is refinement: it feels heavier and plainer than the premium helmets here, the finish is basic, and there is no visor for low sun or spray.

The Register is a rounder, deeper helmet aimed at riders who want coverage and a visor rather than a wind-tunnel silhouette. The removable visor keeps low sun and rain out of your eyes, the shell drops lower at the back, and MIPS is included. Roc Loc Sport is a simple dial that is easy to adjust with cold or gloved hands.

It is built for the school run, the cycle-path commute and weekend pottering rather than chaingangs. Fewer, larger vents mean it runs warmer than a road helmet once you pick up speed, and the bulkier shape can look oversized on smaller heads.