Aries Spherical Helmet
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Why We Like The Giro Aries Spherical Helmet
Whether we're chasing the World Tour or just competing in our local crit series, the Giro Aries Spherical Helmet keeps our dome protected thanks to a new MIPS Spherical design. Built to be lighter and lower profile than the Aether, the Aries delivers best-in-class protection with insane amounts of airflow so that we're not overheating during big climbs and finish line sprints.
Details
- Ultra-lightweight road helmet built with best-in-class protection
- MIPS Spherical system helps protect our brain in nasty crashes
- Aura Reinforcement Arch adds strength and durability
- Roc Loc 5+ Air system allows for a personalized, secure fit
- 5 Star Virginia Tech Helmet Rating gives peace of mind
- 24 vents and internal channels maximize airflow at all speeds
- Extra grippy sunglasses port holds our sunnies securely all ride long
- Item #GIRZ36W
- Shell Material
- synthetic
- Impact Management
- MIPS Spherical, dual density nanobead EPS
- Ventilation
- 24
- Fit Adjustment
- Roc Loc 5+ Air
- Certifications
- Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older, CE EN1077
- Claimed Weight
- [medium] 9.7oz (275g)
- Activity
- road cycling
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 20 ratings
Review Summary
Fits True To Size
Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.Customer Images
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Selecting an option will reload the available reviews on the pageAugust 8, 2025
Finally- a helmet that fits
- Familiarity:
- I've used it several times
- Size Bought:
- Large
Was searching for a new helmet to replace my aging Specialized Prevail II Vent. I tried probably 5 different brands and multiple models from each before I found a display model in store of the Giro Aries to try. This fits very well, has good shape, and feels secure. The reviews about sunglass docking are true. Still trying to evaluate the airflow but it has been 90 deg and 80% humidity lately so there is no stopping profuse sweating. I was pleasantly surprised that Giro included a spare sweat pad in the box. Nice touch. Happy with my purchase!
July 29, 2025
Great Helmet, as always
- Familiarity:
- I've used it once or twice and have initial impressions
Bought this about a month ago but haven't been able to use it (I was on travel). Looks to be typical Giro quality and I can't wait to use it - tho it is very small and tight on my forehead (I've been wearing Giro's of same size - and my Aries is same size and recommended for same size) but it's markedly tighter. We'll see what happens over time but I won't let that take away from what I consider to be an excellent helmet
Originally reviewed on Competitivecyclist.com
June 4, 2025
Great Helmet
- Familiarity:
- I've put it through the wringer
Very comfortable. Great in warm weather.
Originally reviewed on Competitivecyclist.com
May 30, 2025
One Major Flaw
- Familiarity:
- I've used it several times
This is a great helmet with one major flaw. It’s very lightweight and has great venting. However, as others have mentioned is does not hold sunglasses at all. In fact it is the worse helmet I’ve had for this. I use Oakley Flak 2.0s and no matter how I put them in the front they fall out. The little rubber grippers they have added don’t help at all. Now I never take my sunglasses off while riding unless I want to stick them in my shirt pocket.
Originally reviewed on Competitivecyclist.com
March 17, 2025
Best helmet I’ve owned in 35 yrs riding
- Familiarity:
- I've used it several times
We’ve come a LONG way baby! My early years racing, soft-shell mushroom helmets were the norm. I had a Bell Spectrum. Eventually the first hard shells came out and I had a Bell Image Pro. Fast forward three decades and I’ve been through a LOT of helmets, more recently several Synthe, Foray and Cinder models. The Aries Spherical tops them all, by a country mile. Fit, Safety, Ventilation, Style…this one checks all the boxes. It also has great sunglasses integration. I love this helmet. Yes, it costs more, but you only get one brain.
Originally reviewed on Competitivecyclist.com
October 13, 2024
Excellent all-round helmet
- Familiarity:
- I've used it several times
Very comfortable fit. #1 on the Virginia Tech safety scale. Nicely adjustable. Good ventilation and aerodynamics. Compared against other top helmets. This one is more and more easily adjustable than the Lazer, though not as light. Liked it just a hair better than the Specialized. Slightly more expensive than those alternatives.
Originally reviewed on Competitivecyclist.com
October 12, 2024
Great airflow
- Familiarity:
- I've put it through the wringer
The helmet is light and airy, not much for wind noise. The inner harness pinches the back of my head at the top edge of the ratchet strap (may be residual swelling from last crash that made me need a new helmet), but I notice it less each ride. There is an inner fit adjustment on the inside that helps a lot for accomodating head shape. Came from a Smith Trace MIPS that very likely saved my life to the top-rated safety of this Giro. Loved that helmet too.
Originally reviewed on Competitivecyclist.com
September 13, 2024
Got hit by a car wearing it
- Familiarity:
- I've put it through the wringer
I don't think I can endorse this helmet more strongly. At the same time I was turning left, a car decided to pass me on my left (in a no passing zone of course). I was flipped up on the hood and "starred" the windshield of the car with my helmet and head. Other than a solid concussion I didn't have any significant brain injury. With a less quality helmet I'm not sure I would have had the same outcome. I purchased it because of its ranking on the VT website. I recommend reviewing the Virginia Tech helmet rankings prior to purchasing helmets. Stay safe out there.
Originally reviewed on Competitivecyclist.com
August 19, 2024
Great, nice looking helmet
- Familiarity:
- I've used it several times
Not too much to say. I like the look of it. It's comfy and easy to adjust. There's also a red flashing light that you can get (not included) that fits into the rear of the helmet, which is a nice bonus safety feature.
Originally reviewed on Competitivecyclist.com
August 12, 2024
Very nice helmet with a critical flaw
- Familiarity:
- I've put it through the wringer
Lightweight, highly ventilated, comfortable, fits great. But they didn't design the vents in such a way that sunglasses stay in place when you want to slot them in to the holes. I've tried it with several different glasses and they fall out if you shake your head at all or if you bend over to get a bottle, adjust your shoes, stretch, etc. I've lost sunglasses out of the helmet while riding. It's pretty important to be able to put your glasses somewhere besides your face if they're fogging up or getting sweaty.
Originally reviewed on Competitivecyclist.com
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