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Aether Spherical Helmet

4.363636363636363 out of 5 stars
11 Reviews
Current price: $149.98 - $159.98 Original price: $319.95
50% off
Color:Matte Black Flash


Size Chart


Why We Like The Aether MIPS Helmet

The Aether MIPS is Giro's range-topping road helmet, offering a professional-level fit and finish along with superb ventilation and advanced safety features. The standout feature is the MIPS Spherical protection system—an updated version of MIPS that's exclusive to Giro and Bell. Spherical MIPS places the slip-plane technology in between the layers of EPS foam, rather than against the rider's head. This gives us the protective benefits of MIPS without any sacrifice to comfort or cooling power.


  • A no-compromise road helmet that's big on safety and comfort
  • In-Mold construction fuses the laser-cut shell to the EPS foam
  • Roc Loc 5 Plus offers quick, customized adjustments
  • 11 huge vents with deep channeling keep us cool
  • Sunglass ports hold shades on climbs and periods of low-light
  • MIPS Spherical improves overall comfort and function
  • MIPS technology helps to redirect the energy of certain impact forces
  • Ages 5 and older
  • Item #GIR00JZ
road cycling
Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older
Fit Adjustment
Roc Loc 5 Plus
11 vents
Manufacturer Warranty
1 year
Claimed Weight
[medium] 9.3oz
Shell Material
in-mold polycarbonate

Overall Rating

4.5 based on 4 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

Fits Slightly Small

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.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

February 1, 2021

Life saver

I've put it through the wringer
Size Bought:
5' 11"

Had this helmet for the better part of the summer... until I crashed and dented and cracked the shell. Spoiler alert it did its job. Though it’s not the lightest helmet I have owned the safety features out perform anything. The spherical mips is no joke. I used this helmet cross county mountain biking, gravel, and road. I would highly recommend this helmet even though it’s pricey. My head is 60cm around and I bought a large.

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Conner L
3 out of 5 stars

October 30, 2020

Helmet Sizing

I returned this product before using it
Size Bought:
5' 11"

This helmet runs smaller than described. I have owned many helmets over my 25 years of riding. I measured as usual and it was very uncomfortable without the rear lock even tightened. I would recommend going a size up if you purchase. Hopefully it will be more comfortable for you. :)

Preston R
5 out of 5 stars

July 27, 2020

Great helmet

I've used it several times
Size Bought:

I recently bought this for my wife. We ride around 50-60 miles a week and she hadn't updated her helmet in years so we felt like we could splurge on a new one. We are both fans of the MIPS system. She loves the matte blue color and it is pretty rad! Her feedback: light, good ventilation, very wide in appearance but comfortable adjustment system. She has a smaller head and could have purchased the Small but went with the Medium and was happy with her choice.

John G
5 out of 5 stars

May 24, 2020

Perfect Helmet

I've used it several times
Size Bought:
6' 1"

I got Matt Black Flash. Super cool. I have had multiple Giro helmets in the in the past. Love them all. This one is the most expensive but I think it is worth it. Newest helmet technology, MIPS, airflow is superb. My last Giro was Synth - the fit, weight and ventilation are great but this model is a noticeable improvement from Synth.

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MishaV B