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Item # GIR0272

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Item # GIR0272


Lots of tech, not a lot of green.

To us, the hallmark of a Giro design is three central vents. You'll see them on this Giro Saros Helmet. It was part of the original Prolight design, and just about everything they've done subsequently has three prominent central holes. To us, this trident conveys stability and balance. Giro also builds on older designs; while they never add baroque touches, they add little practical flourishes. This helmet hearkens to the long-gone Eclipse while moving forward to the contemporary.

A nice trickle-down tech bit is the Roc Loc 5, Giro's most comfortable and easiest to use retention system to date and the same system used on their top-of-the-line Ionos. Giro engineers took out 40% of the weight of the popular Roc Loc 4 system at the same time they made it more adjustable and more comfortable. What's different you might ask? For starters, the indexed Micro Dial on the back lets you adjust the tension to perfection with a two fingered twist. It's that simple. And the Three Position Bracket allows 15mm of vertical adjustment in the retention basket -- enough to fit any head shape comfortably. But what's comfort without ease of use? Giro facilitates quick donning of your casque with clever strap management. The retention basket has strap holders to ensure that they'll be right where you want them by the time the helmet falls into place on your melon.

The Saros features an in-molded polycarbonate shell that, when combined with the expanded polystyrene liner, creates a structural skeleton that is abrasion resistant for those high speed slides across the pavement and also has great potential to absorb direct high-speed impacts. It also has Giro's Roll Cage technology. Don't worry about looking for it; you'll never see it. It's a net of tough nylon that is molded into the foam liner of the helmet. What it will do for you is keep the helmet from chunking apart like a rotten ice chest when you have a bad crash. The Saros has 23 Wind Tunnel vents to channel airflow directly to your head to keep you as cool as possible, even on hot summer days.

The Giro Saros Helmet comes in Black/white, Blue/white, Red/white, and White/silver and is available in three sizes. Small fits heads 51-55cm, medium fits size 55-59cm, and large fits 59-63cm. It has removable pads so you can wash them when they get funky, and you can be assured of a perfect fit every time you put the Saros on your head.

Tech Specs

[shell] plastic, foam
Adjustable Vents:
Fit Adjustment:
, slidelock chin
Recommended Use:
Manufacturer Warranty:
1 year

Size chart


Adult Cycling Helmets
 SMLXLAdult UniversalWomen's Universal
Head Circumference 20 - 21.75in
(51 - 55cm)
21.75 - 23.25in
(55 - 59cm)
23.25 - 24.75in
(59 - 63cm)
24 - 25.55in
(61 - 65cm)
21.25 - 24in
(54 - 61cm)
19.75 - 22.5in
(50 - 57cm)
How to Measure:
For best results, use a tape measure to measure around your head where your hat would fit comfortably.

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Giro Saros Helmet

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Here's what others have to say...

Unanswered Question

If my head measures 55cm, so I choose the...

Posted on

If my head measures 55cm, so I choose the Small or Medium.

5 5

Great Helmet

This is a great helmet, I bought it the other day to replace a rudy project helmet and I have been very pleased with my purchase. It is not the lightest Giro helmet, that being said it is still super light and fits my noggin amazingly! I use it as my commuter helmet to get to and from work. It vents super well and keeps my head nice and cool. Did I mention how great it fits, I hardly know its there.

4 5

Quality mid-priced helmet

The only issue I've had with this helmet is that the vents seem all-too-good at allowing insects in. Perhaps this is the case with all well-ventilated helmets. I've had to emergency-brake more than once to manually remove wasps, bees and dragonflies that have hit my bald head at 30-40 mph through the vents.

Other than the bug problem, the helmet functions fine. It has not (yet) been pavement tested so I cannot comment on how well it performs when it comes to its primary purpose.

Responded on

If you wear a cycling hat underneath and the bug problem might not be as big an issue.

Unanswered Question

how much does it weigh?

Posted on

how much does it weigh?