How to Choose a Bike Helmet
Galbraith Bike Park
Sale Ends Sep 1
Giro Aries Spherical Bike Helmet
Sale Ends Sep 1
$262.39Compared to $349.95 Save 25%
With a smaller form and lighter weight that deliver sensational comfort and cooling power, the Giro Aries Spherical bike helmet is a premium helmet that won't distract you from the road ahead.
- Spherical Technology Ball-and-Socket design, powered by Mips®, helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner
- It also eliminates contact with hard plastic or slip planes against the skin
- Progressive Layeringâ„¢ features a dual-density liner designed to address high- and low-speed impacts for more comprehensive energy management
- Structural integrity is bolstered by the shatter-resistant and translucent AURA reinforcing arch that runs throughout the helmet
- 24 Wind Tunnel vents are maximized by the AURA reinforcement arch
- 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-mold helmets lighter and cooler than traditional helmets
- Combined with the massive vents, deep internal channeling forces air to flow over the scalp, providing remarkable cooling power
- Revolutionary Roc Loc® 5+ Air fit system adds a new dimension to helmet performance by enhancing cooling as well as fit, comfort and stability
- Using a patented design that suspends the helmet just slightly off the top of the skull, Roc Loc 5+ Air allows cool airflow to pass directly over your head
- Roc Loc 5+ Air enhances the performance of vents and internal channeling that exhaust heat out of the helmet
- Fit and feel adjustments mimic the Roc Loc 5, allowing you to easily custom tune fit tension and fore-aft tilt of the helmet in seconds using a single hand
- Plush IONIC+ antimicrobial padding and a network of intricately engineered deep internal channeling elevate comfort
- Helmet provides full lower hardbody coverage
- Certification: CPSC
Imported.
To find your size, position a tape measure just above your ears and about 1 in. above your eyebrows. Keep the tape level to measure the circumference around the largest part of your head and then find the corresponding size in the Technical specs info.
View all Giro Road Bike Helmets| Best Use | Road Cycling |
|---|---|
| Helmet Style | Road Bike |
| Helmet Construction | In-mold |
| Shell Material | Polycarbonate |
| Head Circumference | S: 20.1-21.7 inches M: 21.7-23.2 inches L: 23.2-24.8 inches |
| Vents | 24 |
| Visor/Brim | No |
| Weight | S: 9.3 ounces M: 9.6 ounces L: 9.9 ounces |
| Gender | Unisex |
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Most Helpful Favorable Review
So comfortable!!
Lizzy2 years ago
I just got this helmet because I needed a new one and this one was rated the best helmet by Virginia Tech. It is super comfortable and fits my head really well! I ordered a medium, which was the size of my last Giro helmet and it fits perfectly.
Lizzy
Los Angeles, CA
18 people found this review helpful
Most Helpful Critical Review
Giro Aries Spherical Helmet
DTbike1 year ago
The Aries Helmet I received was produced in September, 2022. Given that it is April, 2024, I am very disappointed in REI, to be selling this as a this year's model, at full price. The date of production of a helmet is important, given the life of a helmet is around five years. A full priced, $300.00 helmet that has already aged on the shelf is not what I expect from REI. I also called other dealers, like Performance, they are not selling 2022 helmets. What is happening at REI? I used to be able to trust them without question.
DTbike
VT
79 people found this review helpful
Ride SoCal
Orange County, CA
Excellent protection when you need it
11 months ago
I owned this helmet for a little over 9 months before crashing hard on a ride. As far as helmets go, it's stylish, lightweight and provides excellent airflow. The sunglass stowage could be better as others have mentioned, but functionally, it proved its worth where it matters most: head protection when crashing. Aside from road rash and a fractured rib, I was alright as the helmet absorbed the impact of the crash. Sunglass stowage aside (not that it's even that bad, just not as great as other helmets I've used), I'm happy enough with the Aries to purchase one again.
Age:25–34
Yes , I recommend this product
howrad
portland, OR
wanted to love it
2 years ago
Bought this a few months ago. Have owned many Giro road helmets over the last 20 years. This one fits a bit narrower, which is fine if I don’t wear a hat. It’s a bit too snug with a cap. It’s extremely comfy and the pads are great. The glasses storage is bad, maybe the worst I’ve ever had in a road helmet. They stick out, they bounce off the helmet, and they’re hard to quickly stow with one hand.
Age:45–54
Yes , I recommend this product
scott48
Seattle
Comfort, at a price
2 years ago
The thing about the spherical helmet is that it achieves protection against torque without relying solely on bits of thin, stiff plastic -- important for those of us who cycle without hair. Also remarkably comfortable are the thin, pliable straps. Their clasp is so small though that it is difficult to operate -- I have slightly better luck with thumb and middle finger, because of the angle involved. I recommend checking this out before committing.
Age:65–74
Yes , I recommend this product
Lizzy
Los Angeles, CA
So comfortable!!
2 years ago
I just got this helmet because I needed a new one and this one was rated the best helmet by Virginia Tech. It is super comfortable and fits my head really well! I ordered a medium, which was the size of my last Giro helmet and it fits perfectly.
Age:35–44
Yes , I recommend this product
Smoothambler
Colorado Springs
Excellent helmet
1 year ago
Terrific Feel, great air flow, very light. Runs very small. I see the other negative reviews have to do with sizing. I am typically in between M and L and could not even get the M on my head. Definitely size up with this one.
Age:55–64
Yes , I recommend this product
Toni
San Francisco Bay Area
Great fit, but oh, that buckle...
5 months ago
This is the best fitting helmet I've had in a long time. If the straps and boa (the knob in the back) are adjusted properly, the helmet doesn't move at all on your head. It's lightweight and comfortable. BUT... the chin buckle is all but impossible to unfasten. It's very rigid. It takes all my finger strength to squeeze the buckle enough to release it. So, only 4 stars. Try the buckle before you purchase!
Age:65–74
Yes , I recommend this product
DTbike
Vermont
Giro Aries Spherical Helmet
1 year ago
The Aries Helmet I received was produced in September, 2022. Given that it is April, 2024, I am very disappointed in REI, to be selling this as a this year's model, at full price. The date of production of a helmet is important, given the life of a helmet is around five years. A full priced, $300.00 helmet that has already aged on the shelf is not what I expect from REI. I also called other dealers, like Performance, they are not selling 2022 helmets. What is happening at REI? I used to be able to trust them without question.
Age:55–64
No, I do not recommend this product
Fred
Mesa, AZ
Helmets sized wrong
2 years ago
Helmet shape /size arent typical Giro. Runs size too small and narrow.
Age:55–64
No, I do not recommend this product
AmyinBoston
Boston
Super comfy. Worth the money!
3 months ago
I bought this on sale to replace an old Specialized helmet. I wore the Giro and I did not want to take it off. It is so light and comfortable, I barely notice it. I'm glad I finally spent the money and got it. It has a high safety rating, looks good, and feels good. I got the medium, which fits me perfect. I see some reviewers complain about the buckle. I don't have a problem with it.
Age:55–64
Yes , I recommend this product
Anonymous
WI
Giro Aries
2 months ago
Nice helmet. Fits my noggin, looks sharp, and is cooler in warm weather.
Age:45–54
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