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Apparel / Helmets / Road Helmets
Giro Aether Spherical MIPS Helmet Matte Bright Red/Dark Red
Giro Aether Spherical MIPS Helmet Matte Bright Red/Dark Red
Matte Bright Red/Dark Red
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Giro Aether Spherical MIPS Helmet Matte Bright Red/Dark Red
Giro Aether Spherical MIPS Helmet Matte Bright Red/Dark Red

Aether Spherical MIPS Helmet

Mfg PartNum:
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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Performance Innovation.

The Giro Aether MIPS Helmet marks a revolutionary leap forward in rotational energy management. Inside the Aether, a dual-density EPS foam liner helps manage a wide range of impact energies, while also boasting deep internal channeling to provide cooling airflow. Giro's proprietary MIPS® Spherical technology is integrated between the layers of EPS foam - instead of against the rider's head - giving riders the benefits of MIPS without obstruction to comfort or cooling power.

The stunning silhouette is formed by a sleek six-piece shell that surrounds a series of massive vents, with added structural reinforcement via a shatter-resistant AURA reinforcing arch. The final touch is the Roc Loc 5+ Air fit system, featuring 3-way fit tuning, that allows for easy adjustment in seconds.


  • Sleek road helmet with 11 vents and Wind Tunnel internal channeling for optimal comfort and breathability.
  • Shatterproof Roll Cage "Halo" Reinforcement.
  • MIPS Spherical technology shifts the MIPS system between the EPS foam, rather than next to the skin.
  • Featherweight webbing with Slimline Buckle.
  • Sunglass docking ports in front vents.
  • Ponytail compatible.
  • Compatible with Roc Loc 5 LED (sold separately)

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Giro Aether Spherical MIPS Helmet
Other styles of this product are available.
Head Circumference20"-21¾"21¾"-23¼"23¼"-24¾"   

Certification: Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older 

Mfg PartNum: 7099520 

Matte Black - Small

Mfg PartNum: 7098122 

Matte Black - Medium

Mfg PartNum: 7098123 

Matte Black - Large

Mfg PartNum: 7098124 

Matte White/Silver - Small

Mfg PartNum: 7099546 

Matte White/Silver - Medium

Mfg PartNum: 7099547 

Matte White/Silver - Large

Mfg PartNum: 7099548 

Matte Bright Red/Dark Red - Small

Mfg PartNum: 7099510 

Matte Bright Red/Dark Red - Medium

Mfg PartNum: 7099511 

Matte Bright Red/Dark Red - Large

Mfg PartNum: 7099512 

Matte Portaro Grey/White/Red - Small

Mfg PartNum: 7129104 

Matte Portaro Grey/White/Red - Medium

Mfg PartNum: 7129105 

Matte Portaro Grey/White/Red - Large

Mfg PartNum: 7129106 

Matte Black Fade/Highlight Yellow - Small

Mfg PartNum: 7129095 

Matte Black Fade/Highlight Yellow - Medium

Mfg PartNum: 7129096 

Matte Black Fade/Highlight Yellow - Large

Mfg PartNum: 7129097 

Ano Green/Highlight Yellow - Small

Mfg PartNum: 7129086 

Ano Green/Highlight Yellow - Medium

Mfg PartNum: 7129087 

Ano Green/Highlight Yellow - Large

Mfg PartNum: 7129088 

Black Flash - Small

Mfg PartNum: 7099492 

Black Flash - Medium

Mfg PartNum: 7099493 

Black Flash - Large

Mfg PartNum: 7099494 

Matte Black / White / Bright Red - Small

Mfg PartNum: 7140143 

Matte Black / White / Bright Red - Medium

Mfg PartNum: 7140144 

Matte Black / White / Bright Red - Large

Mfg PartNum: 7140145 

Matte Ano Blue - Small

Mfg PartNum: 7140140 

Matte Ano Blue - Medium

Mfg PartNum: 7140141 

Matte Ano Blue - Large

Mfg PartNum: 7140142 

Matte Charcoal Mica - Small

Mfg PartNum: 7140146 

Matte Charcoal Mica - Medium

Mfg PartNum: 7140147 

Matte Charcoal Mica - Large

Mfg PartNum: 7140148 

Mfg Warranty: 12 Mo. Parts & Labor

Warranty URL: https://www.giro.com/warranty.html

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Great flitting helmet
by Anonymous
Cycling Enthusiast

I am an avid cyclist. My rides are long and often. I have not ridden with this helmet yet, but the size is perfect. I am between a medium and a large and chose the large for when I need extra warmth for my head. The retention system works great and is very easy to adjust. I highly recommend this helmet to anyone who is wanting a fantastic helmet.

Reviewed 5/5/2022
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Expensive, but an excellent road biking helmet.
by nhmtnbkr
Cycling Enthusiast
Nashua, NH

This is a fantastic-fitting helmet, with a wealth of adjustment points and long enough straps that it's good for my big melon. I love the Spherical addition to the MIPS liner this has to help with impact dispersion in a potential crash, which I hope I never have to test. It's also very light and airy, making it a joy to ride with because you don't hardly know it's there and it breathes well on hot days. Looking forward to trying the companion light for it.

Reviewed 4/7/2022
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Great helmet
by Don P
Port Angeles, Washington

I've been looking to up grade my helmet for some time. I wanted the extra protection of mips , light weight, good looking, comfortable and with good ventilation. This checked all of those boxes.. I would recommend to a friend

Reviewed 4/28/2022
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I like my helmet
by maxseven
Cycling Enthusiast
0 of 1 customers found this review helpful.

It will fit Aether Helmets. Bought 2 Aether helmets & 1 light. I would not fit on my wife's helmet but would fit on mine with a loud click. the defect is in the Rock Lok system. Hers is a few millimeters thinner than mine. So upon another reviewer's review he Velcro'd the light to the Rock Lok 5. I did the same. IF you buy the Rock Lok 5 light & it will not properly snap into place. Use the 7/8" square Velcro tabs then cut them in 1/2. Attach to light first then to Rock Lok where it is suppose to go.

Reviewed 3/15/2022
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This is a great helmet.
by JohnM
Cycling Enthusiast
N. Texas

The Aether MIPS is a great helmet if it fits you well. Helmets are somewhat like saddles. You have to find the right shape/size for your head and various brands are different. For me Giro has always fit well and I have had several. I worked my way up to the Aether and currently own two. I'm back buying another with the current sale. For me the Aether is lightweight and comfortable. I put it on and forget about it. Like saddles, if you are thinking about it during a ride it probably isn't right. If you ride without ever thinking about it and forget it's there then it's working for you. It also holds my glasses - either Oakley or Rudy Project very securely when not on my face.

I did have the pads wear out in mine over time but I found replacements available for order. A second set of pads should get me to the "expiration date" of helmet when retirement is due.

Reviewed 3/9/2022
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Great comfortable helmet
by PhxStar
6 of 6 customers found this review helpful.

Is there a helmet more awesome than a Synthe? The Aether is it. Super comfortable, lite, and ventilated. I held off buying a first gen MIPS helmet so I can't compare, but the Aether is the best helmet I have owned.

Reviewed 1/31/2019
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Helmet delivers.
by Kamas
Cycling Enthusiast
Orange County, CA
1 of 1 customers found this review helpful.

True to all the other Giro helmets I have owned this helmet checks all the boxes. Fit is similar to the older Synthe it is replacing but there does seem to be something to the Spherical tech business. Seems the higher up you go the helmet is also lighter. No neck issues on longer rides. Grey straps may show less fading, I hope, than standard black. Good sunglass holders and wide vents are good for head scratching.

Reviewed 1/11/2022
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Exceptional Helmet
by MasterGunny
Cycling Enthusiast
Marfa, TX
9 of 9 customers found this review helpful.

Put it though the paces last week with a 36-miler and today with a 100K (cold, wet miserable ride)....perfect fit and extremely light, great ventilation coupled with solid aerodynamics. My ONLY compliant, this is the only high end helmet (yes, at this price point...it is high end) out of too many to count in the past 3-years that DID NOT come with replacement sweat pads.....Come on Giro...

Reviewed 10/20/2018
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An Excellent Helmet
by Lexington biker
Cycling Enthusiast
Lexington, MA

I am a recreational road rider, with most rides in the 20 to 30 mile range, and occasionally twice that. I like the lightness, ventilation, and compactness of this helmet. Even on sale, it is not cheap, but it looks great and fits my head very well. Over the last 15 years, I have used both high end Giro helmets and Laser Helmets. For a number of years Laser had a definite edge in fit and comfort, but now I prefer the Aether. I think the big difference is how the helmets handle the MIPs technology. I find that many MIPs helmets exert a wierd torque on my hair. Aether does not.

Reviewed 4/5/2021
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Great helmet
by Nick
sf bay area
1 of 1 customers found this review helpful.

Replaced an older mips giro with this one. The MIPS is totally integrated and out of the way. Fit perfectly right out of the box. Several months of use and seems great. Last Giro mips saved me from any head injury in a 55kph crash!

Reviewed 11/21/2021
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Excellent Helmet!
by AG88
Cycling Enthusiast
St. Louis, MO
3 of 3 customers found this review helpful.

I have used Giro helmets for years, the recent being an Atmos. I really like the Aether. The adjustments are very good and easy to make. It is very comfortable and light. I like the new safety features, which is why I upgraded...it had been about 8 years since I had a new helmet and my wife was suggesting I get up to speed with the new technology to protect my head.

I would highly recommend this helmet. Expensive, but when one considers the importance of head and brain safety, it was worth the spend!

Reviewed 2/22/2021
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Good looking helmet and a custom fit
by Anonymous
Cycling Enthusiast
Greenville SC
2 of 2 customers found this review helpful.

This helmet is high quality and fits really well. If you havent used a MIPS helmet it's a tad larger on the sides than the older style Giro I had for years, but it looks great and is not noticeably different in size while riding. It sits lower around the brow area so it can apply slight pressure to your riding glasses, but not a big deal at all after adjusting for it. Now other riders helmets appear to sit too high on the head I have noticed. Great rubber grippy spot to put your riding glasses if out near dark. I would purchase this helmet again.

Reviewed 2/22/2021
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Fits great and feels comfortable.
by Anonymous
Cycling Enthusiast
Metro Atlanta hot and humid.

My head , somewhat like a softened rectangle rather than round, has alway fit better in Giro helmets (Atmos, Aeon) rather than Bell helmets. The Aether maintains that same feel. Unsure about the real value of MIPS when my head would always slide around a little inside the helmet anyway and would be much more comfortable paying $100 less but the helmet feels great.

Reviewed 10/11/2021
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Excellent helmet - incremental improvement from last one
by TimT
Cycling Enthusiast
4 of 5 customers found this review helpful.

This fits like the prior Synthes, overall. It allows great air flow and I love the neon yellow color. I had a 4 year old non-mips Synthe that is beyond it's useful life, thus bought this. The straps are secure and don't collect sweat. The padding is light but supportive. The two-part design is something I don't notice at all, hope that's a good thing. The only gripe is the front plastic part of the cage leaves some indents on my forehead when I use it, even allowing sun in to give me an odd forehead sunburn during summer. Fall riding so far has been good, not needing a beanie hat so far and still very breathable.

I would purchase again, although expensive, I'm trusting the safety tech is worth it.

Reviewed 10/19/2020
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by Mark
1 of 1 customers found this review helpful.

I've been wearing Lance era Giros since uh, Lance. They've always fit great compared to other brands so I've stuck with them. This is the first "different" model for me, and holy cow! It fits soooo much better than my last Giro. I've had broken retention systems in the past, called them, and replacement parts sent to me no hassle. Good company and great products!

Reviewed 9/20/2021
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Best fitting and comfortable helmet ever
by Mike Fisher
New Orleans, LA

I am training for a hot weather IM and have worn the helmet on several 100 mile rides. It is extremely lightweight with a very good airflow. I highly recommend this helmet for long distance rides

Reviewed 9/9/2021
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Well ventilated, good looking, but a more difficult fit and allows more sweat down the face
by JonJ
Cycling Enthusiast
Brenham, TX
1 of 1 customers found this review helpful.

Pros: Well ventilated, cutting-edge MIPS, good looks, great straps and adjustments

Cons: Difficult to fit versus prior Giros, allows sweat down the forehead.

I used the sizing chart as recommended given the different MIPS design and it said medium. Medium felt tight at the rear sides of my head -- like a flat spot pushing against the helmet. Tried large but it was HUGE on my head. I ended up with the medium -- very snug, almost too tight, but when I ride I do not notice this. I wear large in other helmets with no issues. The fit of this one is DIFFERENT, so hopefully it fits you better than me.

The front padding is from temple to temple which is nice but it is very thin. It takes very little sweating to saturate the pad and have sweat running down your forehead even with wearing a thicker skullcap such as Headsweats. This is much more of a problem with this helmet than any of my other helmets.

Summary: nice looking helmet with great tech and features, but the fit is more difficult and the front padding is not as absorbent and allows more sweat down the forehead -- perhaps a function of the tighter fit of the helmet on my head.

Reviewed 8/12/2020
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Giro always fit my small but this model squeezes above my ears too doggone tight.
by Retiredandlovingit

It's like my heads too round for it or the size small helmet design has changed. The thin sweat rag I have to wear in summer seems to soften the discomfort experienced. Maybe with cooler temps my head won't expand as much and the Giro comfort will return.

Reviewed 8/12/2021
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Cool and Comfortable
by Luvs2Bike
Cycling Enthusiast
San Antonio, TX
3 of 3 customers found this review helpful.

The fit of this helmet in size Small is the same fit for me as my Giro Synthe (non-mips). I feel it is true to size. I bought the helmet for the added safety and also hoping that it would be cooler than my Giro Aeon or Synthe in the Texas heat. I wore my new Aether tonight in 92-95 degree heat and I could feel the cool air flowing across my head. It was almost like an air conditioner! The helmet is noticeably cooler than my Giro Aeon. I will continue to reserve my Giro Synthe as my winter helmet. The Aether is very comfortable and I certainly did not notice the few extra grams (apx 35) between it any my other Giro helmets. Adjusting the helmet is super easy and I love the new Roc Loc and the sun glasses holder. Highly recommend!!!!

Reviewed 5/27/2020
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Nice upgrade over the Synthe
by Joe
Cycling Enthusiast
Vancouver, wa
2 of 2 customers found this review helpful.

My Giro Synthe helmet was ready to be replaced and I had been drooling over the Aether, so, at a big % off, it was great deal. The Aether has the MIPS technology built in to the helmet instead of being attached to the already made helmet, so the entire interior of the helmet rotates to absorb shock in case of a crash. This seems much better than the Synthe. Fit is very good. I've only had one ride in 85 heat and the ventilation was good.

Reviewed 5/11/2020
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